description Smoo Cave Blowhole Overview
Smoo Cave is a large coastal cave complex near Durness in Sutherland, on the north coast of Scotland. Its broad outer chamber was formed by marine erosion, while an inland stream carved the inner passages through limestone and enters through an opening in the roof. During heavy rain, the stream becomes a forceful waterfall rather than a conventional wave-driven blowhole, and visitors can view the outer chamber on foot.
help Smoo Cave Blowhole FAQ
Is Smoo Cave a sea cave or a freshwater cave?
It is both. The enormous outer chamber was cut by the sea, while the inner passages were formed by the freshwater Allt Smoo stream dissolving and eroding limestone.
Where does the waterfall inside Smoo Cave come from?
The Allt Smoo stream drops through an opening in the cave roof into the second chamber. Heavy rain increases the waterfall's force and can make the inner cave inaccessible.
Can visitors take a boat into Smoo Cave?
Seasonal boat trips have operated from the second chamber into the inner passages when water and weather conditions permit. Availability is never guaranteed because stream levels and cave conditions can change quickly.
How do you reach Smoo Cave near Durness?
The cave lies beside the A838 near Durness on Scotland's north coast and is reached by a stepped path from the parking area. Visitors can enter the broad outer chamber without a boat, but the steps may be slippery.
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