18°27′N 15°29′W / 18.45°N 15.48°W
The Sebkha de Ndrhamcha (Arabic: سبخة ندرهامشا) is a large salt pan in Mauritania that is about 40 kilometres (25 mi) in diameter and the lowest point in Mauritania. The Atlantic Ocean borders it to the west, and the Sahara Desert lies directly to its east.