This picture is of the Valhalla region on Jupiter's moon, Callisto shows a remarkable
CS crater chain. Each crater in this chain is about 5 miles in diameter, or just over 8 km.
I count about 30 craters, in far to accurate of a line to be "natural", and so evenly spaced
and sized. Try that with a hand full of rocks, or an electric arc.
More pictures are added to our posts from the start pos tnow.