Mas are estates or small hamlets. Currently, two families of livestock farmers live in Mas André where they raise sheep for meat (500 to 600 animals). As you leave the hamlet, do stop in front of a complex of ruins with superb stone vaults. Vaulting was often used on both the lower and upper floor, and for both attics and to. The absence of water and of timber for roof structures, the fear of house fires and the abundance of stone explain this type of construction. In fact, a wooden roof could not carry a covering made of limestone tiles – it is too heavy (400 to 500 kg/m²).