Secrets of Roman aqueduct lie in chapel, say UK film-makers

Source for emperor Trajan's Aqua Traiana arose from aquifer at site used to worship water spirits, say O'Neill brothers

For almost four centuries scholars have sought the headwaters of the Aqua ­Traiana, a stone channel which carried spring water down to Rome from near Lake Bracciano. Now, two British film-makers say they have beaten the archaeologists in discovering the source of the water feeding the ancient city's greatest aqueducts.

While researching films on Roman aqueducts, Mike and Ted O'Neill got access last year to a series of reservoirs and tunnels below a long-abandoned medieval chapel near the town of Bracciano.

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