There are also other types of ruins commonly seen in this area of Italy. The Poste--surrounded on all sides by dry laid stone walls--were used for centuries by shepherds to protect their flocks from predators and weather. The other type is called the Jazzo (jazzi, plural), for sheep farms. It's a good thing that this area is a national park which protects these treasures. The sad thing is that some species are endangered or have disappeared altogether... like the Egyptian Vulture.