7 Wonders of the World: Petra - Episode 302
Unprofessional Engineering
00:00
The Name of the Cliffs
The city has three major different periods, and this is why the architecture is is 76 meters high. It's been known to house a number of people, about 30 thousand people. Most of the development was done by the nabotines. So they were doing plumbing, stone mason carving,. architectural stuff, wood working. I mean, they had elaborate systems.
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