Exploratour - Volcanoes of the Solar System
Jupiter's moon, Io, is the only body in the solar system other than the Earth known to be actively volcanic. This image is of one of the volcanoes of Io named Ra Patera, taken with the Galileo spacecraft. The cone-like structure of the volcano can barely be seen in this picture. Remenants of streaming lava flows ca be seen along the side of the vent.
This is page 16 of 23