Read Joshua 15:11 Using Other Translations
And the border went out unto the side of Ekron northward: and the border was drawn to Shicron, and passed along to mount Baalah, and went out unto Jabneel; and the goings out of the border were at the sea.
The boundary goes out to the shoulder of the hill north of Ekron, then the boundary bends around to Shikkeron and passes along to Mount Baalah and goes out to Jabneel. Then the boundary comes to an end at the sea.
The boundary then proceeded to the slope of the hill north of Ekron, where it turned toward Shikkeron and Mount Baalah. It passed Jabneel and ended at the Mediterranean Sea.