Gian Paolo Catalfo
Researches have drilled down into the Antarctic sheet and the have found cycles of freeze, rivers, canyons, and lakes. Researchers dig down one river in Antarctica called Lake Whillans. They say that it is 800 meters below the ice sheet. They have found that the water that some of Lake Whillans’ water comes from an ancient ocean; the seawater was trapped in the lake after the last interglacial period. Before this research they were conducting other ones they say that in this one is the first to directly access a subglacial lake. The lake resembles a marsh, with shallow, slow drainages rather than rushing under-ice rivers.