They had huts made of mud , and erected stone fortresses to protect their villages .
Pre-Columbian inhabitants known as the Omaguacas and Ocloyas , who were later conquered by the Incas during their expansion period , practiced agriculture and domesticated the guanaco .
inhabitants had huts made of mud , and erected stone fortresses to protect inhabitants ' villages .
Pre-Columbian inhabitants known as the Omaguacas and Ocloyas , who were later conquered by the Incas during their expansion period , practiced agriculture and domesticated the guanaco .