Cursus

A Cursus is a monumental Neolithic enclosure structure comprising parallel banks with external ditches or trenches. Found only in the islands of Great Britain and Ireland, relics within them indicate that they were built between 3400 and 3000 BC, making them among the oldest monumental structures on the islands. The name 'cursus' was suggested in 1723 by the antiquarian William Stukeley, who compared the Stonehenge cursus to a Roman chariot-racing track, or circus.