There are few frontiers in the world that can still be said to be unexplored. One of these terra incognita is the land beneath Antarctica’s ice sheets. Buried under kilometres of ice is a fascinating realm of canyons,

A groundbreaking new map,Bedmap3, has provided the most detailed view yet of the hidden landscape beneath Antarctica’s ice sheet, revealing towering mountains, deep valleys, and critical grounding lines where ice meets the ocean.