The "Morro de Arica" is a steep and tall hill located in the city. Its height is 139 meters above sea level. It was the last bulwark of defence for the Peruvian troops who garrisoned the city. It was assaulted and captured on June 7, 1880, by Chilean troops in the last part of their "Campaña del Desierto" (Desert Campaign) during the War of the Pacific.