Good compositon and subject matter, but I think you might pique a little more interest if you include the location and a little history in your description.
I Googled Petra to find out where it is because you got me curious. Its on the crossroads of ancient trade routes in Jordan. The photo is amazing, never saw anything like that before. Do you have any more?
Excellent composition, color and shadows. You timed it just right to be able to see into a few of the tombs. (on purpose right?) Most people take shots of the main artifact (Indiana Jones and the Last Crusade) They don't think about how much there really is to Petra. Outstanding shot!