The soaring mountain peaks and deep valleys hidden beneath Antarctica’s ice sheet have been revealed in a new map produced using decades of survey data acquired by planes, satellites, ships and dog-drawn sleds. Called BEDMAP2, the close-up view of Antarctica without its ice, is a comprehensive digital map of the bedrock, produced using more than 27 million points of data collected by a range of international partners.
Dr Roland Warner, Australian Antarctic Division
http://www.antarctica.gov.au/science/cool-science/2011/bedrock-map-reveals-ice-free-antarctica