The 1,800-year-old monumental arch, which framed the approach to the Roman city, was blown up Sunday, Syria's Directorate General for Antiquities and Museums said, citing witnesses in the local community. ISIS jihadists seized control of Palmyra, a UNESCO World Heritage Site, and the surrounding area from Syrian government forces in May. Since then, the Islamic extremists have beheaded the antiquities expert who looked after the ruins and set about demolishing their architectural riches. In August, they leveled two temples of immense cultural significance -- the Temple of Bel and the Temple of Baalshamin -- prompting outrage and condemnation from around the world. The Arch of Triumph, consisting of one large arch flanked by two smaller ones, opened onto Palmyra's elegant Colonnade. The top of the arch was decorated with "beautiful geometrical and plant ornaments," the Syrian antiquities directorate said. UNESCO, the United Nations cultural organization, describes the
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