Due to the approaching monsoon, the evening sky is cloudy and opaque, so I looked at some of the details in previous photos. Here is the crater Neper right on the edge of the moon. You can see the shadow of the central mountain on the crater's far wall.
Below are diagonal gouges on Mare Vaporum. The large, old crater on the right is Murchison, which is situated directly on the prime meridian. The plain on the left is Mare Serenitatis, the sea of serenity.
The picture below, of the darkest crater on the moon, Plato, is shown at 1600X (on a 96 dpi monitor), so there is some blurring caused by of atmospheric movement. The reddish material that appears to have been ejected when the crater was formed:
Mixed in with the red ejecta is white material. It is possible that the white material was the 'topsoil' and the red represents rock from below. Since there is no air on the moon, red compounds (most likely iron oxide) must've formed in high temperature, solid state conditions.