Indiana University is involved in field investigations in Ahjumawi Lava Springs State Park, located at the base of Mount Shasta. Accessible only by boat, the 6000-acre Park is in two thirds covered by basalt lava. Geologically important, the park is an ancestral homeland of Pit River Indians who have lived in the area for thousands of years. Lava springs, bedrock mortars, ceremonial sites and prehistoric stone fish traps still used today are the unique attractions of this park. Underwater Science, in cooperation with IU School of Public and Environmental Affairs, conducted archaeological investigations and water chemistry analysis within the fish traps in the Park.