Vintage Postcard, Zion National Park, Utah, Mt. Carmel Highway Trail

SWITCHBACKS ON ZION-MT. CARMEL HIGH-WAY, ZION NATIONAL PARK, UTAH. Starting from the floor of Zion Canyon and zig-zagging up the talus slopes of Pine Canyon in a series of six switchbacks, the Zion-Mt. Carmel High way plunges into a 5,607-foot (1,710.1 m) tunnel, from which galleries have been broken out at six selected

points.