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Cave Diving

Plura - the home of Arctic cave diving

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Plura cave

The Plura cave is the biggest known waterfilled cave in Norway. It is located 35 kilometers from the town of Mo i Rana. The first entrance is located approximately 200 meters from the Jordbrua farm, and is easy accessible both summer and winter. Wheter you are cavern diver, full cave or multistage DPV cave diver, Plura has something to offer. The diversity of the cave landscape is beautiful and unique. A water temprature that varies from 2-6°C combined with crystal clear water, makes this a experience out of the ordinary.

The first 450 meters will lead you to the air chamber, and has multiple side passages to explore. If you follow the main line the maximum depth is approximately 34 meters. The deepest side passage is 41 meters deep. It is also possible to go beyond the air chamber, but this should be reserved for the more experienced cave divers.
Map Plura

Litjågå cave

This waterfilled cave is located approximately 60 km from Plura, and is also diveable. To access Litjåaga you first have to dive through multiple restrictions, but after that the passage is getting more spacious. During spring and after heavy rain there might be strong current. To reach the first air chamber you need to swim 475 meters, maximum depth of 22 meters. The cave has three sumps, and a total distance of 1,4 kilometers. The cave beyond the first air chamber is more demanding, and should also be reserved for more experienced cave divers.
Map Litjågå

Plura – The home of arctic cave diving

Our home, Plura, looks over the valleys of the ancient Scandes. This spectacular landscape and the mountain range rimming it originated some 400 million years ago when Greenland collided into Scandinavia. The collision resulted into a huge mountain range, higher than the current Himalayas. Called as Caledonide Mountains, the range reached from current area of Scotland to the Svalbard islands.

These are the insides of once huge mountains, as erosion has worn them down. The dinosaurs have been walking on this landscape, and many ice ages have carved the valleys into their current shape.

Inside these fells are huge deposits of limestone. The stone is made up of the sea floor that was pushed up by the moving land masses into the mountains. During the process, the limestone turned into layers of marble, creating favorable circumstances for acidic water to carve its way through the soft stone and form caves.

In this region of Rana there is about 200 known caves. Altogether there are something like 2000 known caves in Norway. Most Norwegian caves are relatively small, but the Plura system and Steinugleflåget are among the few exceptions. Plura is one of the biggest underground rivers in Norway, maybe in the whole of Scandinavia as well.

Steinugleflåget is a bit of a geological mystery. The collapse is going down at least 230 meters from the surface, taking in account the underwater part of the cave. To create a collapse like that there needs to be a cave beneath. It is not currently known how this kind of cave could have been formed.

Glacial ice has filled the valleys many times. Some of the caves in the area are older than the last ice age. During the periods between ice ages deposits of ice were preserved inside the caves. Analyzing these deposits, it can be learned how the temperatures have changed over not just the last 10 000 years after the last ice age, but even 700 000 years back in time.

Or imagine a bear going to a cave tens of thousands of years ago and dying there. It might be almost perfectly preserved, if circumstances are right. A cave can be like a time capsule, transporting information from the past.

The caves in this area are generally formed of marble. Marble is metamorphic (transformed) limestone. It has turned into crystals, like sugar. Caves in the Caledonian region are very beautiful because of the many colors of marble. The dissolution, or how the water is working with the stone, is very different from limestone. Also, the water being very cold, the chemical reactions are quite different from caves in e.g. Southern Europe.

Some mysteries remain. One of the questions in Rana area is that most of the caves are small, but a few are big. Why so? Maybe diving in the Plura cave will help us to answer that question one day.

Contact Info

Plurdalsveien 1495, 8615 Skonseng, Norway

Phone: +47 907 58 523

Web: Visit Plura på Tripadviser