posted on Sep, 15 2009 @ 09:35 PM
I suppose you can say one of the THEORIES is that it has been caused by natural phenomenas, it certainly have not been established as a fact. To do
that one would have to do closer inspections and examinations on the objects.
For now the only thing to judge from are these images themselves which are taken from quite some distance and makes it hard to properly determine
Personally I do not theorize about anything for these structures as its too hard to tell, it could be natural , and it could also very well be
constructed by someone. There are other interesting things on Mars that suggests artificial structures, such as these: