Bear takes Bradley into rugged canyons, where Bradley overcomes a series of challenges amidst harsh winds, towering heights and a winter storm.

Bear takes Bradley into rugged canyons, where Bradley overcomes a series of challenges amidst harsh winds, towering heights and a winter storm.

Bear takes Bradley into rugged canyons, where Bradley overcomes a series of challenges amidst harsh winds, towering heights and a winter storm.

Bear takes Bradley into rugged canyons, where Bradley overcomes a series of challenges amidst harsh winds, towering heights and a winter storm.

Bear Grylls helps Cynthia Erivo navigate dangerous caves and raging waterfalls in the Brecon Beacons, one site of Bear’s special forces training.

Bear Grylls helps Cynthia Erivo navigate dangerous caves and raging waterfalls in the Brecon Beacons, one site of Bear’s special forces training.

Bear Grylls and Troy Kotsur, the first deaf man to win an Oscar, must learn a new way to communicate in the rugged Scottish Highlands.

Bear Grylls and Troy Kotsur, the first deaf man to win an Oscar, must learn a new way to communicate in the rugged Scottish Highlands.

Bear Grylls takes Russell Brand adventuring across a stunning Scottish isle. They don kilts, and Russell faces his fear.

Bear Grylls takes Russell Brand adventuring across a stunning Scottish isle. They don kilts, and Russell faces his fear.

Bear Grylls takes Rita Ora on an adventure in the Valley of Fire to teach her challenging survival skills.

Bear Grylls takes Rita Ora on an adventure in the Valley of Fire to teach her challenging survival skills.

Bear Grylls invites Daveed Diggs out, tracking a forest ranger who drops a cache of supplies, one of which is Daveed’s biggest fear. It’s also dinner.

Bear Grylls invites Daveed Diggs out, tracking a forest ranger who drops a cache of supplies, one of which is Daveed’s biggest fear. It’s also dinner.

Bear Grylls invites "She-Hulk" and "Orphan Black" star Tatiana Maslany to face her fears in the middle of Wyoming in winter.

Bear Grylls invites "She-Hulk" and "Orphan Black" star Tatiana Maslany to face her fears in the middle of Wyoming in winter.