The vast and remote Brooks Range, a mountain chain stretching across northern Alaska and into Canada's Yukon Territory, inspired a national wilderness-protection movement with its pristine vistas and habitats teeming with wildlife. Narrated by award-winning actress Glenn Close, Gates of the Arctic journeys to this seldom-seen natural treasure, one of the most remote and pristine places in North America, to explore the region's inhabitants, culture, and history. The few travelers fortunate enough to visit the Brooks Range share their experiences, while stunning high-definition photography captures several brief and unexpected encounters some of region's diverse animal life and a few of its exceptional local characters.

Tuesday, 12/2/08 from 4:30-5:30 a.m. ET