The Frankincense trail are excavation sites protected by UNESCO and marked as under the World Heritage Sites. The Frankincense trail can be visited at Al Balid - downtown Salalah, at Khor Rohri, 37 kilometers from Salalah and Ubar at Shisr - believed to be the site of the Lost City, the Atlantis of Arabia discovered by the famous explorer, Wilfred Thesiger.
