* Astronomy

This image, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show the caldera of Apollinaris Patera, an ancient, 5-kilometre-high volcano northwest of Gusev Crater.


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Credit: ESA

The HRSC obtained these images during orbit 987 with a ground resolution of approximately 11.1 metres per pixel. The images show part of Apollinaris Patera, a volcano lying at approximately 7.2° South and 174.6° East.
Apollinaris Patera is an ancient shield volcano located at the northern edge of the Southern Highlands, lying to the south-east of Elysium Planitia and to the north of Gusev Crater, which is now being explored by NASA's Mars Rover, Spirit.

The volcano measures approximately 180 by 280 kilometres at its base and rises to a maximum of 5 kilometres above the surrounding terrain.

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