FORT CIBOLO. Fort Cibolo is located on Cibolo Creek four miles northwest of Shafter at the southeast end of the Chinati Mountains in central Presidio County. The private fort was constructed in the late 1850s by Presidio County's first Anglo-American rancher, Milton Faver, on his headquarters ranch. Fort Cibolo offered protection from Indian raids, an outpost for army detachments from Fort Davis, and subsistence for its inhabitants. The one-story adobe structure had a flat roof of cottonwood poles and was surrounded by walls twenty feet high and three to four feet thick, set with broken bottles to prevent attackers from scaling them. Loopholes allowed defenders to shoot from behind the walls. Circular towers at the north and south corners aided defense. The building was fitted with heavy paneled doors and wood-grilled windows. During the 1860s, when Fort Davis was abandoned during the Civil War, Indians raided the Fort Cibolo area with little resistance other than that of Faver and his men. After the war Fort Davis lent a cannon and stationed troops at Fort Cibolo. Fort Davis patrols were resupplied from the quartermaster's stored goods at Fort Cibolo when they passed through the area.
Full article on the Texas State Historical Association's Handbook of Texas Online