Enormous, mile-long (1.8 kilometers) landforms lie hidden beneath the Antarctic ice sheet, and these supersized subglacial masses may be contributing to the ice's thinning, according to a new study.

New images from the North Sea show never-before-seen landforms that were carved by a single, colossal ice sheet 1 million years ago and subsequently buried beneath a thick layer of mud.

Coastal landforms can be either erosional or depositional. Sand and shingle beaches and spits are depositional. Cliffs, headlands and caves are erosional.

Glaciologists used sound waves to reveal Ice Age landforms buried beneath almost 1 km of mud in the North Sea. The results suggest that the landforms were produced about 1 million years ago, when ...

New images from the North Sea show never-before-seen landforms that were carved by a single, colossal ice sheet 1 million years ago and subsequently buried beneath a thick layer of mud.