Fox Cave is a roadside attraction on U.S. Highway 70 between Roswell and Alamogordo near Ruidoso, New Mexico, linked in Old West folklore to William H. Bonney, or Billy the Kid, as a reported hideout. Originally known as Ice Cave in the late 1800s and early 1900s, it formed over thousands of years as the Ruidoso River eroded micritic limestone. The property later included the Ruidoso River Museum, opened in 2013, where seven small buildings displayed artifacts, photographs, and documents related to the Lincoln County War and figures including Billy the Kid, William Brady, Pat Garrett, and Alexander McSween before the museum closed and a retailer took its place.