Ezekiel 6:3

to the rivers the ravines; the gorges where there were streams and thick trees, and where idolatrous worship was practised (ch. Ezekiel 35:8; Ezekiel 36:4; Ezekiel 36:6), cf. Isaiah 57:5, "that slay the children in the valleys (a different word) under the clefts of the rocks; among the smooth stones of the valley is thy portion; they, they are thy lot; even to them hast thou poured a drink offering, thou hast offered an oblation" (Jeremiah 2:23).

your high places The word properly means a height or hill (ch. Ezekiel 36:2), then a sanctuary situated on such a height (1 Samuel 9:13), and finally any sanctuary (Isaiah 16:12, and so in Moabitish, Moabstone, 50:3), particularly in Israel the rural sanctuaries. These sanctuaries had probably been mainly Canaanitish (Deuteronomy 12:2; Leviticus 26:30), but had been adopted by Israel and devoted to the service of Jehovah (ch. Ezekiel 20:28). Along with the sanctuaries themselves no doubt much of the native religious practice was also adopted. After a long struggle these rural high places were abolished by Josiah, and public service of Jehovah confined to the temple at Jerusalem, though they grew up again under Manasseh. Even the worship of Jehovah at such sanctuaries would be very corrupt, and in the last years of the kingdom the worship of other deities was no doubt also practised. This prophet condemns all worship at the high places as "abominations." This does not appear to be with him a question of mere locality or number of sanctuaries; he considers the high places to be Canaanitish and the service at them no worship of Jehovah.