Why a space ship? Because it looks space shippy to us? Reminds me more of the nose of a jet fighter from the 60/70's (Personal observation if I was to compare it to anything) I would think streamlining and space shippy looking may not be the best use of resources to get between stars. Apart from no need for it as far as I understand it.

One picture in the many posted (in a link) here reminds me of a lava flow. Now, bearing in mind the age and the activity on the moon without the usual stuff that happens on Earth I prefer at the moment to believe its is a geological feature.