NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Radar image of Sapas Mons volcano, Venus. The bulk of the volcano is seen as the radar-bright area at the bottom of the frame. This indicates large lava flows. At the top right edge of the volcano is a large circular impact crater. Many of the flows seem to have originated from the flanks of the volcano, rather than the cone. This type of pattern is seen in Hawaiian-type volcanoes on Earth. Sapas Mons is about 400 kilometers across at its base, and rises 1.5 km above the local terrain. It is located within the Atla Regio, a broad equatorial rise at 188 degrees east longitude. The data for this image were gathered by the Magellan radar-mapping spacecraft in 1991.
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