Mojave Crater Floor and Central Uplift (CTX Frame - Natural Colors; credits: Lunexit)

This full HiRISE image shows that the Crater Floor - South of the Central Uplift - is densely pitted and fractured. These Pits, many of which are partially filled with dark sand, lack raised rims and a circular form.
This suggests that they are not impact craters. In fact, very few definite impact craters are seen on the Floor and Walls of Mojave, implying that it is incredibly young and relatively well preserved for a crater of its size.

HiRISE images covering Mojave Crater and the surrounding Region are yielding new insights into impact processes on Mars.