The Necropolis of Pantalica in southeast Sicily is a collection of cemeteries with rock-cut chamber tombs dating from the 13th to the 7th centuries BC. There are thought to be over 5000 tombs, although the most recent estimate suggests a figure of just under 4000. They extend around the flanks of a large promontory located at the junction of the Anapo river with its tributary, the Calcinara, about 23 kilometres northwest of Syracuse. Together with the city of Syracuse, Pantalica was listed as a UNESCO World Heritage Site in 2005.
More on Wikipedia: http://en.wikipedia.org/wiki/Necropolis_of_Pantalica
More on Wikipedia: