Crater Features formed by Ice-Hail on moistened ground

In contrast to Electric-Discharge-Machined Craters

Larger image
Take note, in left image, the two crater chains, the 3/4 crater under the end, and the 120 degree ridges and some flat-floored craters.

A crater chain on Mars. See it in 3D soon at

The right image of a stero pair
Another mono-image

Click on image to see larger size.

The last two images are each halves of two stero pairs.

More photos available but that is all for now, This should be enough to generate some diversified science.