Ready, set go: starting gates from Colchester's Roman Circus found

Twelve starting gates from the Roman Circus at Colchester, England have been discovered by archaeologists who have been working on the site since 2004. The gates operated like "greyhound traps, unleashing the charioteers on to the quarter-mile long opening stretch of the track."

The gates were large enough to accommodate 48 horses, four for each of twelve chariots. The circus is the only one to have been discovered in Great Britain.