Denman Canyon, Threatening the Heart of Antarctica

A Case of Retrograde Bed Slope

Shape of the bedrock under Denman Glacier (Source NASA) — Wikimedia Commons— This file is in the public domain

On the fringe of Antarctica lies the deepest canyon found on any continent in the world. The canyon bottoms out at 3.5 kilometers (11,500 feet) below sea level. But you can’t see the bottom because the canyon is completely filled by ice from the Denman Glacier. Located in East Antarctica, the Denman Glacier measures 12 miles…