High Arctic Close-up:

North America's high arctic is a forbidding region of dry polar deserts and thick permanent icecaps. We accompany a veteran nature filmmaker to explore the wildlife on this harsh and challenging land. Destroyers of Mountains: The giant glaciers relentlessly grind down seemingly indestructible mountains. From that destruction spring up many forms of life including the sure-footed bighorn sheep, the cougar, and the remarkable bird, the dipper.