New map reveals hidden landscape under Antarctica’s ice sheet

Scientists have devised the most detailed map to date of the terrain hidden below the vast ice sheet blanketing Antarctica, uncovering an exuberant landscape of mountains, canyons, valleys and plains while discerning for the first time tens of thousands of hills and other smaller features.

The researchers used the latest high-resolution satellite observations and a method called ice-flow perturbation analysis, which estimates subglacial topography and conditions based on surface features...