Joshua 15:6
toward Beth-hoglah, and continuing on the north of Beth-arabah. The border ascended up to the boundary marker set up by Reuben's son Bohan.
Joshua 18:17
Then it turned north toward En-shemesh and proceeded from there to Geliloth opposite the ascent of Adummim, where it turned toward the Stone of Bohan, Reuben's son,
Joshua 18:19-21
From there the boundary proceeded to north of the slope of Beth-hoglah and terminated at the northern bay of the Salt Sea where the Jordan River ends in the south. This was the southern border.
Treasury of Scripture Knowledge
Summary
And the border went up to Bethhogla, and passed along by the north of Betharabah; and the border went up to the stone of Bohan the son of Reuben:
The stone
Bible References
The stone
Joshua 18:17
Then it turned north toward En-shemesh and proceeded from there to Geliloth opposite the ascent of Adummim, where it turned toward the Stone of Bohan, Reuben's son,