This illustration shows the locations and interactions of volatiles on Mars.
This  <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a> .
This image includes elements that have been taken or adapted from this file: