images

Arsia Mons volcano.

by

Nasa/JPL/ASU/Novapix

Reference

a-mar10-00005

Date

2007-10-14

Arsia Mons is the southernmost of the Tharsis volcanoes. It is 270 miles in diameter, almost 12 miles high, and the summit caldera is 72 miles wide. For comparison, the largest volcano on Earth is Mauna Loa. From its base on the sea floor, Mauna Loa measures only 6.3 miles high and 75 miles in diameter. The image here is a mosaic of several daytime IR images taken by the Mars Odyssey spacecraft.