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fountain of the sun a spring which formed one of the landmarks on the boundary between Judah and Benjamin (Josh. 15:7; 18:17). It was between the "ascent of Adummim" and the spring of En-rogel, and hence was on the east of Jerusalem and of the Mount of Olives. It is the modern 'Ain-Haud i.e., the "well of the apostles" about a mile east of Bethany, the only spring on the road to Jericho. The sun shines on it the whole day long.