Monument Valley is a strange land, nothing like I've ever seen, or probably anyone has ever seen. For good reasons it is the setting for many Westerns. Getting out of the protection of your car, and walking around there is isolating and creepy. You definitely feel you are totally on your own, independent, your being against the elements and the unknown. The vastness around me I'm sure I was not perceiving with reality.
To me, Monument Valley looks like a million year old depleted ocean. Not knowing enough about geology, it probably is. You sense around you a once lush, abounding life, with thousands of strange critters, that has since disappeared. All around you there are signs of water, in the rocks, cliffs, the sand, but there's no water. Maybe it's just an illusion the brain plays on you when you're in the desert.