yeah, those are made out of sandstone, basically they used to be at the bottom of the inland sea, to the left of those, out of frame are ones that are completly white... they made up the white sand beach that was the shore of the inland sea... if you look closely at those (in real life) you can see fossils of sea shells and stuff. When the rocky mountains were formed, they were forced up sideways, they things go all the way up through wyoming... I have the same pictures but 200 miles away, lemme post those: I've had many a-geology trip there.
these are like 400+ feet tall, they are huge.
here is a crappy example of scale on these puppies, we climb there all the time.
this is the same "range" of rocks, 200 miles north... keeps going like the energizer bunny
