https://www.sciencefocus.com/news/glaciers-on-mars-reveal-the-red-planet-went-through-multiple-ice-ages
Glaciers on Mars reveal the Red Planet went through multiple ice ages - BBC Science Focus Magazine
Jan 22, 2021 - The glaciers act as a 'time capsule' containing a record of the Red Planet's geological history.
glaciers on marsthe red planetbbc science focuswent throughice ages