Highway 120 provides year-round access to Central Sierra Nevada Mountains. The highway traverses the southern portion of the Stanislaus National Forest, between the elevations of 2,800 and 4,700 feet. The highway continues through Yosemite National Park, eventually reaching an elevation of 9,943 feet at Tioga Pass, which is subject to annual winter closure. The Groveland Ranger District encompasses the Highway 120 corridor on the Stanislaus National Forest. For the most current information please call the Groveland Ranger District at (209) 962-7825, or stop by our office on Highway 120.