[juanmalapuente]

It may be a "roughly squared boulder" but all the explanation about the pixels is just *#@>%!! (expletive removed by Fireskull) All the rest of details in the image, the same size and even smaller look perfectly round. :-?
About the emplacement...well, aliens in 2001 put them anywhere, even under the surface of the moon, didn't they?. :lol: