Like the Kansas Chalk Pyramids I tweeted about resembling ancient buildings, "Cathedral Valley" Utah. Sun and Moon TempleLast pict is " Glass Mountain". It is made of Selenite/Gypsum crystal. Gypsum used in Egyptian/Roman/Medieval sculptures. Also called Plaster of Paris.
I was looking at the map and saw " Solomans Temple " very interesting....The last pict is Factory Butte Utah.
Glass Mountain is the dark crystal rock in the forefront corner of picture...