Joshua 18:15

And the side of the Negev is from the end of Kirjathjearim, and the border goes out to the west and comes out at the well of waters of Nephtoah,

Joshua 15:9

and this border comes around from the top of the mountain unto the fountain of the water of Nephtoah and goes out to the cities of Mount Ephron; and the border goes around to Baalah, which is Kirjathjearim.

Treasury of Scripture Knowledge

Summary

And the south quarter was from the end of Kirjathjearim, and the border went out on the west, and went out to the well of waters of Nephtoah:

Nephtoah

Bible References

Nephtoah

Joshua 15:9
and this border comes around from the top of the mountain unto the fountain of the water of Nephtoah and goes out to the cities of Mount Ephron; and the border goes around to Baalah, which is Kirjathjearim.