In ancient times, Arab tribesmen dug diversion tunnels to protect their low-lying trading post of Petra against desert flash floods.
from FOX News https://ift.tt/2qTPu1k
from FOX News https://ift.tt/2qTPu1k
In Jordan's ancient Petra, sirens warn of flash floods
![In Jordan's ancient Petra, sirens warn of flash floods]()
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November 18, 2018
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