In ancient times, Arab tribesmen dug diversion tunnels to protect their low-lying trading post of Petra against desert flash floods. More than two millennia later, an alarm system warns visitors if flood water rushes toward what has become Jordan’s main tourist attraction….

Read the full article at the publisher’s site: https://www.voanews.com/a/in-jordan-s-ancient-petra-sirens-warn-of-flash-floods/4663624.html
 

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