sentences:  These include Giants' tombs (Bronze Age mass graves), Domus de Janas (hypogaean Neolithic graves) and several nuraghi.An example of Roman ruins is the bath-pool on Saint Saturnino's hot springs.Benetutti is known for its thermal sources, famous since ancient times and probably related to the name of the village, which could come from the Sardinian "bena 'e tottu", meaning "everyone's fountain".