The hill country of Judah is by far the most characteristic part of that tribe's possessions; it was on account of the shelter of these mountain fastnesses that this people managed to hold their own against their neighbors and hide away from the conquering armies of Assyria and Egypt. No other section of the country was so secluded and protected by her natural borders. It was the environment of these bare hills and rugged valleys which did much to form the character and influence the literature of the Jews. The hill country is an area well defined, about 35 miles long and some 15 broad, and is protected on three sides by natural frontiers of great strength; on the North alone it has no "scientific frontier." On the South lay the Negeb, and beyond that the almost waterless wilderness, a barrier consisting of a series of stony hills running East and West, difficult for a caravan and almost impracticable for an army. On the West the hills rise sharply from those valleys which delimit them
from the Shephelah, but they are pierced by a series of steep and rugged defiles which wind upward to the central table-land. At the northwestern corner the Bethhoron pass-part of the northern frontier line-runs upward from the wide Vale of Ajalon; this route, the most historic of all, has been associated with a succession of defeats inflicted by those holding the higher ground (see BETH-HORON). South of this is the Wady Ali, up which runs the modern carriage road to Jerusalem, and still farther South lies the winding rocky defile, up part of which the railway from Jaffa is laid, the Wady es Surar. A more important valley, because of its width and easier gradient, is the great Vale of Elah (Wady es Cunt), to guard the highest parts of which (now the Wady es Cur) was built the powerful fortress of Beth-zur (
2Ch 11:7, etc.), which Josephus (Ant., XIII, v, 6) describes as "the
strongest place in all Judea (see BETH-ZUR). Up this pass the Syrians successfully with the aid of elephants (Ant., XII, ix, 4) invaded Judea. The eastern frontier of the hill country is one of extraordinary natural strength. Firstly, there were the Jordan and the Dead Sea; then along all but the northernmost part of the eastern frontier lay a long line of semi-precipitous cliffs, in places over 1,000 ft. high, absolutely unscalable and pierced at long intervals by passes all steep and dangerous. Within this again came a wide area of waterless and barren desert, the Wilderness of Judah (or Judea) known in English Versions of the Bible as JESHIMON (which see). To the northeasterly part of the frontier, where the ascent from the Jericho plain to the mountains presents no special difficulty in gradation, the waterless condition of the Jeshimon greatly restricted the possible
routes for an enemy. The natural position for the first line of defense was the fortified city of Jericho, but as a frontier fortress she failed from the days of Joshua onward (see JERICHO). From Jericho four roads pass upward to the plateau of Judah; unlike the corresponding passes on the western frontier, they do not traverse any definite line of valley, but in many places run actually along the ridges.