Volcanic Cone
At the north pole, the Mars Express spacecraft has seen fields of volcanic cones, some up to 600 metres high. They appear to indicate very recent volcanic activity, but the question remains whether it is on-going activity.
This image is a detail of another image (related image "Fields of Volcanic Cones") and shows one of the cones that is visible in the lighter top part of the main image.
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Last Update: 1 September 2019