The Moenave sandstone formation of the Colorado Plateau is a relatively soft sandstone layer that lends itself well to being intrically sculpted by eons of wind driven sandstorms and sporadic deluges of rain and snow.
Layers of gypsum from arid periods of time lend this particular formation some beautiful white striations that interlace with the red/purple sandstone.
To my eye, this is one of the most memorable of Nature's sculptures in a land of harsh beauty.
And surely, one of the most interesting and beautiful Moenave sandstone hoodoos that I've ever encountered is the Hopi Clown, named for its uncanny resemblance to the trickster of the Kachina tradition.
A Google image search will show you that resemblance