Bohlander, J. and T. Scambos. 2005. Outlines of Antarctic megadunes regions. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media.

Background: Unlike snow dunes that are piles of drifted snow, Antarctic megadunes are long, undulating waves in the surface of the ice sheet that are 2 to 4 meters (6.5 to 13 feet) high and 2 to 5 kilometers (1 to 3 miles) apart. They are slightly rounded at their crests and are so subtle that a person on the ground cannot see the pattern. Regions of megadunes on the Antarctic ice sheet have been identified and outlined using satellite remote sensing imagery. Click here for more information about megadunes research...