Stonehenge is perhaps the most famous prehistoric monument in the world. Begun as a simple earthwork enclosure, it was built in several stages. The first monument was as an early form of henge monument, built about 5,000 years ago, where prehistoric people buried their cremated dead. The unique lintelled stone circle with its enormous sarsens and smaller bluestones was erected in the late Neolithic period around 2500 BC. Stonehenge remained important into the early Bronze Age, when many burial mounds were built nearby. Today Stonehenge, together with Avebury and other associated sites, forms the heart of a World Heritage Site with a unique and dense concentration of outstanding prehistoric monuments.
