Black Rock Gorge is a deep and narrow cleft in Old Red Sandstone conglomerate through which the Allt Graad 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 only 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 a few hundred meters in length and reaches 36 metres (120 feet) in height. It attracts a substantial amount of tourism, and there is a camping site nearby.
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.