 The mountains to the west of US 97A form part of the Chelan Wildlife Area, which stretches along the west side of the river from Wenatchee to Chelan.At the mouth of Navarre Coulee, the highway intersects the south end of SR 971, which travels north to Lake Chelan State Park.US 97A continues northeast for a short distance before leaving the river and railroad at Knapp's Hill, which the highway crosses under with a short tunnel.