Petra - Maria Giulia Amadasi Guzzo, Eugenia Equini Schneider - Google Books

https://books.google.de/books?id=sBxRvmw2pDsC&pg=PA168#v=onepage

"If ever a dead city held romance it is Petra. . . . Hewn out of ruddy rock in the midst of a mountain wilderness, sumptuous in ornament and savage in environs, poised in wildness like a great carved opal glowing in a desert, this lost caravan city…