These incredible landmarks were carved by nature over vast stretches of time—each a magnum opus of its environment. http://on.natgeo.com/2uzYYl8

These incredible landmarks were carved by nature over vast stretches of time—each a magnum opus of its environment. http://on.natgeo.com/2uzYYl8 

https://twitter.com/NatGeoTravel/status/887432154094997504