Original sentence: However, Little Blue Peak didn't always have that distinction, since Berryessa Peak was considered to be the Yolo County highpoint up until 1991, the year John Sarna discovered this mountain.The peak, located on the Little Blue Range very close to the Yolo-Lake borderline, rises to an elevation of about
Edited sentence: However, Little Blue Peak didn't always have that distinction, since Berryessa Peak.That year John Sarna discovered this peak which is more than  higher.The peak, located on Little Blue Ridge very close to the Yolo–Lake borderline,.was considered to be the Yolo County highpoint until 1991