DTAMIL In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04 In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04 In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04 In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04 In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04 In Mexico's Copper Canyon, Bear Grylls demonstrates how to survive by using traditional cave shelters, fishing without lines or nets and even eating mud. 2026-04-04