Newly published research shows that hundreds of depressions on Mars' surface, known as "ghost dunes," could hold evidence of ancient life.
The research, published in the Journal of Geophysical Research: Planets, shows that each of the ancient dunes (most likely sand dunes) are the size of the U.S. Capitol. They've remained preserved for years because of the way they were composed, with lava and sediment partially burying the dunes over time, causing them to become hardened, the research states.
Mars 'ghost' dunes may have evidence of alien life | Fox News
I'm going for a swim in the lake. I'm expecting a full-fledged turdfest when I get back. You can thank me later. :-)