The term British Ancient Monument can refer to a stele, which is a tall, upright stone slab with an inscription or relief on it, usually commemorating a person or event. Stonehenge is a prehistoric monument located in Wiltshire, England, consisting of a ring of standing stones. It is believed to have been constructed from 3000 BC to 2000 BC. A henge is a type of ancient monument consisting of a circular or oval-shaped bank and ditch, with the bank being inside the ditch. Henges are typically associated with the Neolithic period in Britain.