Great find, I've never seen the set in that much detail. It's quite remarkable how closely it replicates the TMP model, down to the cradle at the front, and the pods in formations of twos.
I like the entrance cut into the side of the pod, and the decayed remains of further pods on the right. I imagine before Ceti Alpha VI "exploded", Khan and his followers probably constructed their own dwellings from wood, stone or other local materials. When the planet was devastated and most life seems to have been obliterated, they were forced to retreat into the three tiny cargo pods they had left.
No wonder Khan was pissed off.