Joshua 18:15
The southern boundary began at the edge of Kiriath-jearim, proceeding from there to Ephron and then to the spring at the Nephtoah Waters.
Joshua 15:9
The border proceeded from the top of the mountain to the spring of the waters of Nephtoah, then to the cities of Mount Ephron, and then the border curved toward Baalah (also known as Kiriath-jearim).
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
The border proceeded from the top of the mountain to the spring of the waters of Nephtoah, then to the cities of Mount Ephron, and then the border curved toward Baalah (also known as Kiriath-jearim).