The stony flatness is a persuasive lie: beneath a quilt of boulders, gravel, and dust, a glacier can persist after it has carried its own cargo downhill and then vanished from casual view. Ice remains below. What reads as a dry rocky plain may instead be a debris-covered glacier, its surface reshaped by transport, collapse, and melt rather than by bedrock alone. The disguise works.This is more tha...More