7 Wonders of the World: Petra - Episode 302
Unprofessional Engineering
00:00
How Petro Was Built?
In the past couple of decades research on this location has really hamped up. 800 tombs have been discovered thus far. The bedrock consists of three sandstone formations. There's to nes in the city center that are carved out of various sub levels of the formations. They're, they're guessing, only about 15 % of the overall city,. cause remember this place, how long it housed 30 thousand people.
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