2 Kings 3:25

3:25 They tore down the cities and each man threw a stone into every cultivated field until they were covered. They stopped up every spring and chopped down every productive tree.

Only Kir Hareseth was left intact, but the slingers surrounded it and attacked it.

2 Kings 18:31

18:31 Don’t listen to Hezekiah!’ For this is what the king of Assyria says, ‘Send me a token of your submission and surrender to me. Then each of you may eat from his own vine and fig tree and drink water from his own cistern,