 Sharply incised with deep, canyon-like walls, whether flowing or dry the wadis can be formidable obstacles to travel.The Jordan River is short, but from its mountain headwaters (approximately 160 kilometers north of the river's mouth at the Dead Sea) the riverbed drops from an elevation of about 3,000 meters above sea level to more than 400 meters below sea level.Before reaching Jordanian territory the river forms the Sea of Galilee, the surface of which is 212 meters below sea level.