QUESTION: How much of Antarctica is covered with ice? Sierra Sunnie Tait, Librarian/Media Specialist Wines Elementary Ann Arbor, Mi ANSWER from Deane Rink, PTK Field Producer, Palmer Station Tue, 11 Feb 1997 15:05:58 -0500 Dear Sierra, Over 97% of Antarctica is covered with ice, ice that averages 2160 meters (or over a mile) thick. This is 90% of the world's ice, and 70% of the world's fresh water. The other 2.4% of Antarctica is composed of ice-free land, either on the peninsula, or in the dry valleys that exist where the continent meets the southern oceans. these ice-free zones exist because mountain ranges prevent the ice from flowing into these coastal areas. Many of the most well-known dry valleys exist across McMurdo Sound from the largest American research station, McMurso, on Ross Island. Deane Rink LFA-2 Field Producer