Moreeb Dune or Tal Moreeb (تل مرعب Mor'ib Hill) is a large sized sand dune located in proximity of Liwa Oasis at the Empty Quarter desert in the United Arab Emirates. With a reported 50 degree slipface, and height of 300 metres, the dune is popular for organised drag races competitions. Moreeb Hill is the tallest dune in the UAE, and one of the largest hill climbs in the world. Moreeb Dune is one of the highest sand hills in the world. The dune is 1600 meters long.