Here is your “monolith”:
technically, yes, it is a monolith. Monolith means one stone. But that doesn’t make it anything special, they’re everywhere.
I’m not all that impressed. After all, we have the Japanese Underwater Pyramid on Earth, so why can’t Mars have their own unique structure made through erosion.
This reminds me of an argument I made a while back on a topic I can’t really remember. We’re all familiar with the phrase form follows function, but what about the opposite: function follows form. That is, we see the form of a clean jutting piece of rock and assume that it must have a function based on our wild imaginations.