Dark Light
This image is of the upper part of Athabasca Valles, a very young flood channel on Mars that might have been carved by a flood of lava instead of a flood of water.

Of course, “very young” is a relative term: the flood that carved the channel took place millions, perhaps tens of millions of years ago. Erosion has dug into the upstream sides of the high-standing parts of the landscape and produced boat-like tails on the downstream side.


Image: NASA/JPL/University of Arizona https://www.uahirise.org/hipod/ESP_065903_1895
Related Posts

Layers in Blocks

The objective of this observation is to examine layers exposed in small blocks and in a butte in eastern Arabia Terra, in the Northern Hemisphere of Mars.