I have done a few enlargements to help get a better look.
I don't know if anyone has noticed around the base of the rock face are ledges. Further below that are steps.
Because these are satellite images they have a tendency to appear flattened or scrunched together in perspective.
Many people believe that Nasa takes images of other planets using Camera and lenses, This is not true as a camera would be useless in taking images without correct lighting. The fact is Nasa always uses radio spectrometer imaging. They have done this since the beginning.
Radio imagery assures them the ability to take images in complete darkness as radio waves are sent to the surface and are returned to the satellite that sends the data to an earth satellite dish. The information is processed through a computer that renders the image.
Satellite radio imagery is much better than any camera and lenses could ever take. especially in regarding mapping a planet. Radio images can take pictures though materials such as trees or shrubs. Because radio waves can go through and around abject this makes it much more practical than using cameras with lenses. Radio imagery has came a long way since it began, It is capable of putting images together in full color.
Another thing to remember is that because nasa continues to use radio imagery that allows them to easily manipulate the images and frequency.
For example a satellite image taken of an area can have certain frequencies turned down to not show up in the image, such as structures and buildings.