Al-Khazneh (the Treasury) was carved out of the sandstone walls of the surrounding cliffs. It is simply amazing. How did they do it and how long did it take? An architectural masterpiece in every way, shape and form. Y ou can pretty much have the place to yourself if you arrive anytime before 8 a.m. or after 5 p.m. The tourist onslaught has not yet begun or subsided by then. The only ones you´ll have to share it with are the camels and their owners.