At the First Baptist Church of Dothan, Alabama, our Sunday School teacher was a top surgeon. One day he invited the class to his home to view his slides of the Holy Land when he visited.
He turned out to be an excellent photographer. Of all the places he visited, Petra was by far the most fascinating. It would only be entered by very narrow path in the wall of stone. Every house public building etc. had been carved from sheer rock. An extraordinary place.
Thanks yarddog! The stuff that was carved into the cliff-face survived the earthquake that knocked down most of the town in the (I think) 6th c AD.
It’s a beautiful place. One can spend days there. I visited last year. They carved a mini-aqueduct into the rock wall on the main path into town which brought water down from the river they dammed. I particularly enjoyed snooping around the excavated Roman temple (built later) and finding yellowish-beige and maroon paint in several areas.