Bible Meaning: Ruin, destruction
Strong's Concordance #H4889
The Mount of Corruption is considered one of the seven mountains on which Jerusalem rests. The mount is specifically mention in 2Kings 23:13 and referenced as "the hill that is before Jerusalem" in 1Kings 11:7. Some Biblical commentaries speculate that the Mount of Corruption is actually another name for Mt. Olivet (Olives).
The mount of Corruption is where King Solomon built altars to pagan Gods in order to appease his many foreign wives (1Kings 11:8, 2Kings 23:13, Nehemiah 13:26). Scripture also seems to indicate that Solomon himself, in his old age, also indulged in worshipping pagan deities (1Kings 11:5 - 7, 10, 2Kings 23:13).
Solomon's endorsement of idolatry, along with his marriage to countless non-Israelite wives (which he was told not to do, Deuteronomy 7:1 - 4, 17:17 - 18), were the primary reasons Israel split after his death.
King Josiah (640 - 609 B.C.) was the last righteous ruler the Kingdom of Judah enjoyed before being destroyed by the Babylonians. During his reign he destroyed the pagan altars erected by Solomon on Mount Corruption and defiled the area he used so that all idolatrous practices within in would cease.
1Kings 11:1, 4, 6 - 9
But king Solomon loved many strange women, together with the daughter of Pharaoh, women of the Moabites, Ammonites, Edomites, Zidonians, and Hittites;
For it came to pass, when Solomon was old, that his wives turned away his heart after other Gods: and his heart was not perfect with the Lord his God, as was the heart of David his father.
And Solomon did evil in the sight of the Lord, and went not fully after the Lord, as did David his father. Then did Solomon build an high place for Chemosh, the abomination of Moab, in the hill that is before Jerusalem, and for Molech, the abomination of the children of Ammon.
And likewise did he for all his strange wives, which burnt incense and sacrificed unto their Gods. And the Lord was angry with Solomon, because his heart was turned from the Lord God of Israel, which had appeared unto him twice . . .
2Kings 23:4, 13
And the king (Josiah) commanded Hilkiah the high priest, and the priests of the second order, and the keepers of the door, to bring forth out of the temple of the Lord all the vessels that were made for Baal, and for the grove, and for all the host of heaven: and he burned them without Jerusalem in the fields of Kidron, and carried the ashes of them unto Bethel . . .
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.