The valley or wadi of Nahal Mishmar begins in the Hebron hills, running east towards the Dead Sea. Its western part is shallow, at an altitude of approximately 270 m above sea level, and it proceeds to fall more than 300 meters into the Jordan Rift Valley before emptying into the Dead Sea, over . Nahal Mishmar runs north of the Tze'elim Stream, between Ein Gedi and Masada.
Access is from Highway 90.