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In Jordan's Ancient Petra, Sirens Warn of Flash Floods

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. Earlier this month, the alarms were activated for the first time, said Hussein al-Hasanat of the Petra Development & Tourism Region Authority. Sirens blared minutes before a torrent fed by heavy rains approached...

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