Mars volcanoes active recently

High-resolution images from Mars Express show that the planet’s largest volcanoes may have seen volcanic and glacial activity in the past few million years.

Lava on the flanks of Olympus Mons perhaps only 2.4 million years ago, from a team who examined HRSC images of five Tharsis volcanoes. Gerhard Neukum: “These volcanoes are potentially still active today.” Nature, 23–30 December 2004.

Olympus Mons caldera ages were read from about 100 to 200 million years. Arsia Mons caldera floor about 130 million years. Glacial-like deposits around Olympus dated 4 million years in places.