In the valley of the Jordan, on the other hand, vegetation is as luxuriant and tropical as in the forests of Brazil. Through a dense undergrowth of canes and shrubs the river forces its way, rushing forward towards its final gulf of extinction with a fall of 670 feet since it left the Lake of Tiberias. But the distance thus travelled by it is long in comparison with its earlier fall of 625 feet between Lake Hûleh and the Sea of Galilee. Here it has cut its way through a deep gorge, the cliffs of which rise up almost sheer on either side. The Jordan has taken its name from its rapid fall. The word comes from a root which signifies "to descend," and the name itself means "the down-flowing." We can trace it back to the Egyptian monuments of the nineteenth and twentieth dynasties. Ramses II., the Pharaoh of the Oppression, has inscribed it on the walls of Karnak, and Ramses III., who must have reigned while the Israelites were still in the wilderness, enumerates the "Yordan" at Medînet Habu among his conquests in Palestine. In both cases it is associated with "the Lake of Rethpana," which must accordingly be the Egyptian name of the Dead Sea. Rethpana might correspond with a Hebrew Reshphôn, a derivative from Resheph, the god of fire. Canaanite mythology makes the sparks his "children" (Job v. 7) and it may be, therefore, that in this old name of the Dead Sea we have a reference to the overthrow of the cities of the plain. Eastward of the Dead Sea and the Jordan the country is again mountainous and bare. Here were the territories of Reuben and Gad, and the half-tribe of Manasseh; here also were the kingdoms of Moab and Ammon, of Bashan and the Amorites. Here too was the land of Gilead, south of the Lake of Tiberias and north of the Dead Sea. We can read the name of Muab or Moab on the base of the second of the six colossal statues which Ramses II. erected in front of the northern pylon of the temple of Luxor. It is there included among his conquests. The statue is the only Egyptian monument on which the name has hitherto been found. But this single mention is sufficient to guarantee its antiquity, and to prove that in the days before the Exodus it was already well known in Egypt.