The archaeological park of Sumhuram, a UNESCO World Heritage Site, lies 40 kilometers (25 miles) to the east of Salālah on a hilltop overlooking Khor Rori, a freshwater creek fed by Wadi Darbat. Hadramite traders from Yemen fortified the outpost from the 4th century B.C.E. to the 5th century C.E. to control the region’s frankincense trade. Locals believe the site is home to one of the palaces of the Queen of Sheba. Today, thirsty camels and aquatic birds frequent this breathtaking spot.