I admit that I didn’t know of dwellings there; but you typed there were MILLIONS, and it didn’t sound right to me.
I was born in Indianapolis, and live just one county away now. INDY has slightly over 1,000,000 pop. and I know how much area that takes up.
It was YOUR initial input here that got me to looking for anything about Petra.
I don’t like being found wrong after I’ve posted something; but I usually don’t blame the other fella for my mistake; and he’s helped me to learn something new.
I think we both have and perhaps have shown others about Petra that they were unaware.
It does look like a really cool place to visit!