A region allotted to the tribe of Ephraim.
Josh 19:50According to the command of the Lord, they gave him the city that he asked, namely, Timnath-serah in the hill country of Ephraim. And Joshua) built the city and lived in it.
Josh 24:30And they buried him in his own inheritance at Timnath-serah, which is in the hill country of Ephraim, north of Mount Gaash.