Famous as a back drop for the movie Harry Potter and the Goblet of Fire, Black Rock Gorge is a deep and narrow cleft in Old Red Sandstone conglomerate through which the Allt Graad (also known as the 'River Glass') flows in Easter Ross, Scotland. It was caused by rapids heavily burdened with sediment being carried upwards as part of the great Post-glacial rebound.
It lies a few kilometres from Evanton, at the edge of the Evanton Wood in the traditional territory of the Clan Munro. The Black Rock Gorge is approximately 1.5 km in length as shown on 1:50 000 Ordnance Survey mapping and reaches 36 metres (120 feet) in depth. It attracts a substantial amount of tourism, and there is a camping site nearby.[1]
The gorge is the subject of local Gaelic myth, in which a local noblewoman, the Lady of Balconie, is lured into its depths by a mysterious man, thought to be the Devil. Ever since, it is said, the cries which she utters can be heard from the top.