No cliffs, just buttes.
I arrived late in the evening at Monument Valley, tired from the long drive from Bryce Canyon. I pitched my tent on a narrow strip of sand next to the Navajo visitor centre car park, and fell asleep.
I woke at dawn to this view---the iconic backdrop of the cowboy movies of my childhood. I felt the usual prickle of not-quite-recognition that attended much of my drive round the US that year.
Within an hour, the car park was beginning to fill. But for an hour, I had this magical place to myself.
The image here is shot using the High Dynamic Range technique---three images taken at low, medium, and high exposure then composited to capture the detail in the bright sky and shadowed base of the buttes.