text: The only way that this could be an alien artifact is if the martians are inside of it or underneath it. That would explain how the camera can not see any other buildings around the object because they are all inside of it so no one is outside. They also could be inside of the butte because the planet is deadly for some paticular reason and they have shelter inside safely away. And another reason is because inside of the planet there may be some source of running water that is keeping them alive.