Nat Geo HD

Explore the engineering wonders of Europe's northernmost region, from Iceland's epic lava-defying barriers to Finland's record-breaking vertical factory. (2 of 6) 7+.

Thord and Bjoern are tested to the limits when they have to rescue a truck from falling into a lake. 7+.

Thord and Bjoern battle one of Norway's biggest storms in a decade as they try to rescue a truck loaded with steel girders. 7+.

Bjoern is put under pressure when a head-on collision between two trucks blocks an ambulance on an emergency call-out. (S7, ep 3) 7+.

An aerial view of Scotland reveals an astonishing tidal energy project, a majestic cliff-top castle and the world's first golf course. (S4, ep 1) 7+.

As storms close runways, a man has an apparent heart attack on an incoming flight. Can the plane land? Later, a fire drill turns into a real emergency. (S1, ep 4) 7+.

Fridays are always busy, and more passengers means more problems. Today an air ambulance emergency, security breaches and illegal drugs need attention. (S1, ep 7) 7+.

The work never slows at Sydney Airport, whether it's changing a wind sock, painting a runway at midnight or putting out a potentially catastrophic fire. (S1, ep 9) 7+.

An oversold flight needs passengers to surrender their seats, but will any volunteer? Cracked windows risk grounding a Dreamliner and more. (S1, ep 9) 7+.

Experts delve into the fatal crash of Singapore Airlines Flight 006. They originally blamed severe winds then they found strange markings on a closed runway. 7+.

A look into the 2009 crash of Turkish Airlines Flight #195. Just before landing, the plane mysteriously fell from the sky, killing 9 people. (S9, ep 6) 7+.

The Roman Empire once controlled 25% of the world's population. Now, archaeologists are excavating this vast frontier. (S2, ep 5) 7+.

Spiculus becomes a superstar in Rome's brutal arenas. Rewarded with wealth and privilege, he fights for glory.

Archaeologists dig beneath the Colosseum to uncover the Roman games, gladiator secrets and remains of ancient beasts. (S1, ep 2) 7+.

Experts reveal a different picture of the Dark Ages, as they unravel the mysteries of the treasure hoard unearthed by a metal detector enthusiast in 2009. 7+.

Off the coast of Sweden, can experts find the battleship the Mars, which vanished over 450 years ago and is shrouded in legend and mystery? 7+.