Phantom in the mist or ghoul trick of the light?
THEY have been the scene of strange sightings, unexplained noises and ghostly goings-on since they were discovered 20 years ago.
Dozens of accounts of spooky events in Edinburgh’s 17th-century underground vaults have led to them being described as one of Britain’s most haunted places.
Now two backpackers believe they have photographic proof ghosts prowl the gloomy corridors.
