BBC: Ancient underwater remains thought to be a "long lost city" are in fact the result of a naturally occurring phenomenon, researchers have found.
The site, found by snorkelers off the Greek island Zakynthos, appeared to have paved floors and colonnades.
But research by the University of East Anglia and University of Athens has found the site was created by a geological process.
The formations, researchers found, were created up to five million years ago.
Prof Julian Andrews said: "The site...