Moving camp from the Whillans Grounding Zone to Whillans Subglacial Lake.

Salty secrets

Look: A vast reservoir of water has been hiding under Antarctic ice, researchers confirm

Ice sheet models will need to be updated.

Kerry Key, Lamont-Doherty Earth Observatory, Columbia University

Boris SV/Moment/Getty Images

Researchers know these subglacial bodies of water exist — but their full extent has been elusive.