suggested in 1723 by the antiquarian William Stukeley, who compared the Stonehenge cursus to a Roman chariot-racing track, or circus.

Cursuses range in length from 50 yd to almost 6 mi. The distance between the parallel earthworks can be up to 100 yd. Banks at the terminal ends enclose the cursus. Over fifty have been identified via aerial photography while many others have doubtless