You will defeat every fortified city and every important ¹  city. You must chop down ²  every productive ³  tree, stop up all the springs, and cover all the cultivated land with stones.” ⁴ 

They tore down the cities and each man threw a stone into every cultivated field until they were covered. ¹  They stopped up every spring and chopped down every productive tree. Only Kir Hareseth was left intact, ²  but the slingers surrounded it and attacked it.