Jordan’s ancient city of Petra has been hit by flash floods over Christmas, threatening ancient structures and injuring at least three people. Videos on social media show deluges surging down rock faces and racing through the tight passages of the UNESCO world heritage site. #شاهد | السيول تهدد مدينة #البتراء الأثرية 🌧️🇯🇴 pic.twitter.com/K8rWJloW5v — العربي الجديد (@alaraby_ar) Petra, built some 2,300 years ago by the Nabatean kingdom, is carved out of sandstone cliffs and ravines where water levels can rise quickly and take visitors by surprise. Hundreds of tourists have now been evacuated an…