The Smoo burn Allt Smoo drops nearly 25 meters into the second chamber down a vertical shaft, the Falis Smoo or chimney Smoo as the as the sink hole in the roof is called. The burn cascades into a deep pool with a depth of around eight meters. After heavy rain, the Allt Smoo is changed into a raging torrent that crashes into the underground lochan with a gigantic roar. The "blow hole" and waterfall can be observed from an observation point above the cave.
Smoo Cave is located at the eastern edge of the village of Durness, on Scotland's most northerly coastline. It is a dramatic location and on the only primary road in the area, the A838 Durness to Tongue. A trip to Smoo Cave has to be included in any stay in Durness. Set into limestone cliffs, Smoo Cave is quite large - 200 feet long, 130 feet wide, and 50 feet high at the entrance. The cave is a great tourist attraction for people visiting the north-west coast, and is well worth a visit.
NC 419672, situated at the head of a narrow inlet, Geodha Smoo which runs inland for about 600 meters Smoo is the largest and most dramatic coastline cave in Britain. This spectacular site has a rich archeological history, an interesting geological formation and is abundant in wildlife.