'Hill Country Of Ephraim' in the Bible

Now there was a certain man from Ramathaim-zophim from the hill country of Ephraim, and his name was Elkanah the son of Jeroham, the son of Elihu, the son of Tohu, the son of Zuph, an Ephraimite.

He passed through the hill country of Ephraim and passed through the land of Shalishah, but they did not find them. Then they passed through the land of Shaalim, but they were not there. Then he passed through the land of the Benjamites, but they did not find them.

When all the men of Israel who had hidden themselves in the hill country of Ephraim heard that the Philistines had fled, even they also pursued them closely in the battle.