B08_Attachment_8_Big_Oak_Flat_Tunnels_and_Tioga_Map.pdf

This is a map document depicting Big Oak Flat Road (Highway 120) and its three tunnels within Yosemite National Park, located approximately 10 miles from Crane Flat to Yosemite Valley. The map illustrates the route from the Big Oak Flat Entrance (elevation 6,560 feet) southward through the park, with striping limits marked at the northern section beginning at the Crane Flat intersection with Tioga Road and Big Oak Flat Road (elevation 6,200 feet) and at the southern section ending at the El Portal Road Junction (elevation 3,950 feet).

The three tunnels are identified with their specific locations: Tunnel 1 (Upper Tunnel) at Mile 2.1 with an elevation of 5,840 feet; Tunnel 2 (Middle Tunnel) at Mile 5.0 with an elevation of 4,740 feet; and Tunnel 3 (Lower Tunnel) at Mile 7.6 with an elevation of 4,140 feet. The map includes markers for mileage points measured from Crane Flat, vistas and overlooks including Vista Point El Capitan & Merced Canyon and Yosemite Valley Overlook, and parking facilities. The document serves as a reference guide for understanding the physical geography and infrastructure of this critical park access route.