BBC Earth Astro

Documentary series looking at the impact of carbon on the Earth and how carbon levels can be can be reduced.

Michael enjoys an action-packed day savouring exquisite grilled fish, modelling traditional Spanish capes, and unearthing a secret speakeasy that was the favourite haunt of a literary hero.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Ben journeys into Zambia to live with a British family who have built a safari lodge on the edge of a national park. In the process, Ben uncovers what motivates them to keep going.

On the last leg of his Scandinavian journey, Simon travels through the beautiful pine forests of Sweden to Copenhagen, the historic capital of Denmark.

In Louisiana, Hurricane Ida destroys homes and lives. In Norway, High seas and high winds force a Captain to abandon ship. And in California, wildfires tear through the state.

A ground-breaking journey to The Deep, our final frontier and home to real-life aliens,from monstrous sharks to shrimps in glass cages and perhaps the origin of all life on Earth.

Documentary series looking at the impact of carbon on the Earth and how carbon levels can be can be reduced.

On the last leg of his Scandinavian journey, Simon travels through the beautiful pine forests of Sweden to Copenhagen, the historic capital of Denmark.

In Louisiana, Hurricane Ida destroys homes and lives. In Norway, High seas and high winds force a Captain to abandon ship. And in California, wildfires tear through the state.

Michael enjoys an action-packed day savouring exquisite grilled fish, modelling traditional Spanish capes, and unearthing a secret speakeasy that was the favourite haunt of a literary hero.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Documentary series looking at the impact of carbon on the Earth and how carbon levels can be can be reduced.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Corals build themselves homes of limestone in the warm, clear, shallow seas of the tropics.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Competition for food becomes fierce as lion numbers rise; a lioness risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

The big blue is the world's greatest wilderness, far from shore and many kilometres deep. It's a vast marine desert where there is little to eat and nowhere to hide.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

All life is driven by the need to breed. Yet for a few, the odds of success are overwhelmingly against them, so these have adopted the most extraordinary mating strategies of all.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

All life is driven by the need to breed. Yet for a few, the odds of success are overwhelmingly against them, so these have adopted the most extraordinary mating strategies of all.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

All life is driven by the need to breed. Yet for a few, the odds of success are overwhelmingly against them, so these have adopted the most extraordinary mating strategies of all.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

All life is driven by the need to breed. Yet for a few, the odds of success are overwhelmingly against them, so these have adopted the most extraordinary mating strategies of all.

Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

It's our green seas, not the blue, that bring life to our oceans. Here sunlight powers the growth of enchanted forests of kelp, mangroves and prairies of sea grass.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Michael's Sicilian adventure sees him dine with a Duchess, journey off-road to discover a wonder of the classical world, and marvel at a golden cathedral with a hidden secret.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Osteoporosis is a disease in which bones become brittle and easily broken. It is more common in women, and usually worsens with age. Michael Mosley sees how to keep bodies, bones and muscles healthy.

Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Osteoporosis is a disease in which bones become brittle and easily broken. It is more common in women, and usually worsens with age. Michael Mosley sees how to keep bodies, bones and muscles healthy.

Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Osteoporosis is a disease in which bones become brittle and easily broken. It is more common in women, and usually worsens with age. Michael Mosley sees how to keep bodies, bones and muscles healthy.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

On the coast, two worlds collide. Coasts are the most dynamic and challenging habitats in the ocean - that brings great rewards but also great danger.

Ben travels to the small remote island of Flores in the Azores - home to Magnus, Lucy and one-year-old Frey, who live in an off-grid cottage on a steep sloped mountain.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Michael hits the beach to cook a secret seafood speciality, discovers a curious open-air library, crafts some incredible cactus-inspired jewellery, and toasts a Hollywood legend.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Michael rides the iconic Route 28 tram, embraces quirky Portuguese cuisine, loses himself to melancholic folk music, encounters passionate peacocks, and retraces the steps of a royal tragedy.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

Michael rides the iconic Route 28 tram, embraces quirky Portuguese cuisine, loses himself to melancholic folk music, encounters passionate peacocks, and retraces the steps of a royal tragedy.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

Michael rides the iconic Route 28 tram, embraces quirky Portuguese cuisine, loses himself to melancholic folk music, encounters passionate peacocks, and retraces the steps of a royal tragedy.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

In Oregon, wildfires tear through the state. In Texas, a storm ruins a wedding. And in Hawaii, a climber fights for his life.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Osteoporosis is a disease in which bones become brittle and easily broken. It is more common in women, and usually worsens with age. Michael Mosley sees how to keep bodies, bones and muscles healthy.

The Big Cats 24/7 team is returning to the Okavango Delta. With bigger cubs to feed the lions must hunt around the clock. New female leopard Lediba has two young cubs, and Pobe the cheetah is back.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Osteoporosis is a disease in which bones become brittle and easily broken. It is more common in women, and usually worsens with age. Michael Mosley sees how to keep bodies, bones and muscles healthy.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

A look at one of the largest cereal factories in the world and one of the most important products in the modern age.

Join Ryan Pyle as he explores the Taklamakan Desert in Xinjiang, north west China.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Edward and Ryu explore Busan's fish market and Gamchon Village's refugee history. They experience nightlife, where Ed discusses his identity, then journey to Pohang and Tongyeong's oyster farms.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

Curator and scholar Peter Lee charts the Majapahit's milestones and enduring legacy; the Majapahit united Indonesia's isles.

Whilst humans are prone to fighting the inevitability of ageing, trees have perfected the art of aging gracefully. In this episode, we will discover how mature trees do incredible things to thrive.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Ash Dykes ends his journey at Jiayuguan, visits Crescent Moon Lake, meets Mr. Dong at Yardang, and concludes at Yumenguan Fortress, marking the Great Han Wall's end.

Chef Edward Lee and Ryu Sooyoung travel Korea's coasts to harvest spring delicacies. From mudflats to ancient fish weirs, they discover a season of renewal, deep tradition, and coastal flavours.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

Ash Dykes ends his journey at Jiayuguan, visits Crescent Moon Lake, meets Mr. Dong at Yardang, and concludes at Yumenguan Fortress, marking the Great Han Wall's end.