Were Massive Channels on Mars the Product of Mud Volcanoes?

Features on Mars thought to be caused by lava were, in fact, the result of massive mud flows, a new study reveals.

Mud volcanoes on Mars could be the cause of distinctive features that most researchers had thought were left over from ancient lava flows. Tens of thousands of channels spread out over the Martian surface. Hundreds of kilometers long, and tens of miles wide, these ribbon canyons reach far across the ruddy landscape of Mars.