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Photo: Kroelleboelle, CC BY-SA 3.0 via Wikimedia Commons
About 100 m deep and 2 km long cave. Artificial lighting inside. Tours of 45–60 min. Also for families, but check if your walking or health are issues. The cave is cold, . Grottekroa by the cave offers food and beverages, souvenirs, tickets and accommodation.
Grønnligrotta is a marble karst cave in Rana Municipality in Nordland county, Norway. It is located in the valley of Røvassdalen, and was first explored in 1914. It has a total depth of 107 metres (351 ft) and explored length of 2 kilometres (1.2 mi). It is probably connected to the nearby Setergrotta. The cave is equipped with artificial lights and open for tourists.
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