Environmentalists and Indigenous communities in California and Oregon are celebrating after work crews this week breached the last of four dams along the Klamath River, completing the largest dam removal project in U.S. history. For decades, conservationists, led by the Yurok, Karuk and Hupa tribes, fought to remove the dams, citing their heavy toll on salmon spawning grounds. Yurok Tribe Vice Chairman Frankie Myers said in a statement, “The dams that have divided the basin are now gone and the river is free. Our sacred duty to our children, our ancestors, and for ourselves, is to take care of the river, and today’s events represent a fulfillment of that obligation.”