The Gaskill Brothers' Stone Store is a unit of the San Diego County Park system. It is located in the mountain-desert back country 50 miles east of San Diego in Campo, California, at the junction of Forrest Gate Road (Prior to 1941, known as the Border Road) and Highway 94. It is expected to become a key historic feature of the proposed Camp Lockett State Park, now in development.The venerable stone building was built in 1885 and currently houses a museum operated by the non-profit Mountain Empire Historical Society.