"Ear of the Wind"...

Ear of the Wind is a 134-foot-tall arch located in Monument Valley Navajo Tribal Park.
This photo, with people included, shows just how large this monument is. The reason you don’t see any pictures from the other side of the arch is that it isn’t visible; the arch opens upward, which is why it is called an ear.

Navajo Nation Reservation, Monument Valley, Arizona.
Photo # K04_4684-89h.
(c) Kelly Shipp