This oblique perspective view of the Jovis Tholus shield volcano on Mars was generated from the digital terrain model and the nadir and colour channels of the High Resolution Stereo Camera on ESA’s Mars Express.
The volcano’s complex caldera system comprises at least five craters. The largest is about 28 km wide, and sits off centre. The calderas step down towards the southwest where the youngest eventually meets with the surrounding sea of even younger lava flows.