2 Kings 23:13

And the high places that were before Jerusalem, which were on the right hand of the mount of corruption, which Solomon the king of Israel had builded for Ashtoreth the abomination of the Zidonians, and for Chemosh the abomination of the Moabites, and for Milcom the abomination of the children of Ammon, did the king defile.

The high places ... the right hand of the mount of Corruption [har hazeeytiym] which Solomon ... had builded - (see the notes at 1 Kings 11:7.) The mount of Olives is a hilly range on the east of Jerusalem. This range has three summits, of which the central one is, by a slight change х har (H2022) ha-Mashchiyt (H4889)], the mount of Corruption, so called from the idol temples built there; and of course the hill on the right hand denotes the southernmost peak. (Barclay, p. 65; Osborne, 'Palestine,' p. 107, note; Rosenmuller's 'Geography,' 1:, p. 70). Josiah is said not to have destroyed, but only defiled, 'the high places on the hill of Corruption.' It is most probable that Hezekiah had long before demolished the idolatrous temples erected there by Solomon; but as the superstitious people continued to regard the spot as consecrated ground, Josiah defiled it.