Albert Barnes Commentary Ezekiel 6:3

"and say, Ye mountains of Israel, hear the word of the Lord Jehovah: Thus saith the Lord Jehovah to the mountains and to the hills, to the watercourses and to the valleys: Behold, I, even I, will bring a sword upon you, and I will destroy your high places." — Ezekiel 6:3 (ASV)

Rivers - Or, “ravines,” which were, like the mountains, favorite seats of idol-rites (2 Kings 23:10).