Purchase Print The approach of sunrise at Sky Rock Petroglyph and the Sierra Nevada Mountains, near Bishop, California. The petroglyphs in this region appear largely in a volcanic tableland, that is in the vicinity of Fish Slough an area designated as an Area of Critical Environmental Concern (ACEC), for the marsh’s rich environment, which supports a variety of plant and animal life, some unique to the area. It was this abundance of life and water resources in a largely remote, and barren place, that attracted the ancestors of the Paiute and Shoshone native american tribes that have historically lived in the region, and carved the rock art explorers to the region see today.