From En-rogel the boundary proceeded in a northerly direction and came to En-shemesh and on to Geliloth (which is across from the slopes of Adummim). Then it went down to the Stone of Bohan. (Bohan was Reuben’s son.)
It curved northward and went to En-shemesh and on to Geliloth, which is opposite the ascent of Adummim, and continued down to the Stone of Bohan, Reuben's son.
Joshua 18:17 In-Context
The southern side began at the outskirts of Kiriath Jearim on the west, and the boundary came out at the spring of the waters of Nephtoah.
The boundary went down to the foot of the hill facing the Valley of Ben Hinnom, north of the Valley of Rephaim. It continued down the Hinnom Valley along the southern slope of the Jebusite city and so to En Rogel.
It then curved north, went to En Shemesh, continued to Geliloth, which faces the Pass of Adummim, and ran down to the Stone of Bohan son of Reuben.
It continued to the northern slope of Beth Arabah and on down into the Arabah.
It then went to the northern slope of Beth Hoglah and came out at the northern bay of the Dead Sea, at the mouth of the Jordan in the south. This was the southern boundary.