Lava flow

Lava flow

. Extensive volcanic plains and towering volcanoes are found on Mars. This image, taken from the Mars Global Surveyor, captures lava frozen into the surface of Daedalia Planum, southwest of the Arsia Mons volcano, probably between 1 and 2 billion years ago. An area of 1.5 thousand meters by 2.0 thousand meters is covered in this image. (Courtesy of NASA, JPL and Malin Space Science Systems.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University