Thanks for your short answer.
Accepting these glass structures are indeed on the moon as you say, what I am trying to establish is whether or not they could hae been the product of some - as yet - unknown natural process?
We do know that nature can produce systematic geometric forms (Giant's Causeway, Fingal's Cave etc) and we know that intense heat turns silicon dioxide into glass.
All we require to then is to understand the actual mechanism. You suggest 'Alien'. But are you absolutely convinced some natural process could not have been the cause?
What would the principle of 'Occam's Razor' suggest is the more likely?