“Jearim” means forests

Jearim: , Mount, a place named in specifying the northern boundary of Judah. (Joshua 15:10) The boundary ran from Mount Seir to "the shoulder of Mount Jearim, which is Cesalon" --that is, Cesalon was the landmark on the mountain. Kesla , seven miles due west of Jerusalem, stands on a high point on the north slope of a lofty ridge, which is probably Mount Jearim.