On the north end of Bishop CA, running parallel to & on the west side of Hwy 6, is a long dirt road called Fish Slough Rd. Indian petroglyphs can be found out here & also on the ridges along Chalk Bluff Rd (to the south). The entire region is called a volcanic tableland & hot springs are very common in this region. The Owens River Gorge & Lake Crowley are to the west. High clearance vehicles are recommended for traveling these back roads, but 4×4 is rarely needed.