On the rim

Nour guided the rover to the south side of the crater. A natural gap in the rim here provided access to the inner crater, and a road had been cut that ascended to this gap then descended the rim in several broad switch-backs. The kids oohed and cooed as the rover tipped and swung its way up the road. A couple of them looked a little ill from motion sickness.

From Water: Generation Mars, Book Three. Available now at https://www.amazon.com/Water-Generation-Mars-Book-Three/dp/1733731067

Image: illustration (color version) by Luis Perez for Water, Generation Mars, Book Three (please note: book interior illustrations are grayscale)