An activist in Palmyra, Syria, said Islamic State militants have "pulverized" the Arch of Triumph monument. Islamic State destroys 2,000-year-old Arch of Triumph in Palmyra http://t.co/gz4xCEUr24 pic.twitter.com/ggP88qV0xi — The Telegraph (@Telegraph) October 5, 2015 "IS has destroyed it," Mohammad Hassan al-Homsi told Agence France-Presse Sunday. The arch was believed to have been built 2,000 years ago, and militants have already obliterated two ancient temples at the historic site.