For thousands of years, caves were the form of dwelling most widely used by mankind. The safety and protection which prehistoric peoples found in these primitive natural shelters would also be sought after later by other cultures. Such is the case with the Muslims, who excavated most of the caves and cave dwellings which are to be found in the province of Granada. These types of underground constructions, which faithfully reflect the historic, social, and economic changes of their surroundings, blend in with the landscape and its topographic features, giving the areas in which they are concentrated – the districts of Guadix and El Marquesado and Baza-Huéscar: El Altiplano – a particularly evocative beauty. They form part of a valuable heritage which has become not only a sign of identity but also an important tourist resource.