Yellowstone National Park is a spectacular landscape and a diverse habitat which supports an array of wildlife. But this serene habitat also holds a dark secret: it sits atop a super-volcano that could 'blow' at any minute. This episode follows the park's residents; the beavers, otters, elks and bison that are oblivious to this ticking time bomb, thriving in this land of extremes. Our narrator, esteemed naturalist Armstrong Wedgewood (actor Matt Lucas) is waiting for a potentially life changing phone-call, but still delivers hilarious anecdotes from his crew's filming trips to the region.

Originally released by BBC, 2016. Streaming video file encoded with permission for digital streaming by Infobase on May 22, 2019.

Yellowstone National Park (1:11); --Seismic Activity (1:54); -- Winter in Yellowstone (3:18); -- Spring Thaw (3:20); -- Elk (5:44); -- Clark's Nutcracker (3:09); -- Beavers (5:31); -- Credits: Round Planet: Yellowstone (0:29); .