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Venture underground and discover an incredible limestone cave on this special guided tour. You'll get the chance to explore inside a mountain, visit an underground river and try some light spelunking!

This tour takes you into Øyfjellgrotta, a natural limestone cave stretching 500 meters (1,640 ft) into the mountain adjacent to Mosjøen. Challenge yourself with a short, steep walk to the cave entrance and embrace spelunking as you traverse narrow sections and even crawl through some tight spots! Your courage will be rewarded with an underground river.

While an underground adventure may sound intimidating, your experienced guide will be with you the entire time, making this a safe and secure trip. Equipped with safety gear including a helmet and headlight, prepare for an exciting underground exploration in Northern Norway.

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A woman with safety helmet and headlamp is exploring the limestone cave of Øyfjellgrotta located in Mosjøen in Helgeland in Northern Norway.
2 women are climbing along the lime stones in Øyfjellgrotta located outside of Mosjøen in the Helgeland region in Norway.
4 happy tourists giving a thumbs up in Øyfjellgrotta located outside Mosjøen in the Helgeland region in Norway.
3 people are approaching a water stream inside Øyfjellgrotta limestone cave located outside of Mosjøen in the Helgeland region.
A woman is holding onto a rope after ascending down through a small hole in Øyfjellgrotta limestone cave located in the Helgeland region in Norway.

Important on this trip

Minimum age

Children must be at least 5 years old to participate in this activity

Departure point

Please meet at Fjelltrim parking lot in Øydalen. Follow signs for Mosjøen Airport. After 3 km you turn right onto Øydalsvegen. Follow this road until you get to the marked parking lot.

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Equipment included

You will be provided with a helmet and headlight, overalls and gloves