Motion - Season 6 Episode 14 Edge of Alaska
Overview: Greg Aiello takes a wild and dangerous trip to the edge of Alaska, exploring Wrangell-St. Elias National Park, and staring into the depth of the state's epic wilderness and remote beauty. Along the way, he battles to stay with his fellow traveler down a rapidly moving river, explores a glacier and even paddles into a cave of ice that could collapse at any moment.