Korallgrottan
The longest cave in Sweden, over six kilometres of limestone passage near the Norwegian border in Jamtland.
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Korallgrottan was found in 1985 and the surveyed passage now runs to well over six kilometres, cut by water through limestone in the mountains near the Norwegian border - which makes it the longest cave in the country. It takes its name from coral-like calcite formations on the walls. Entry is by guided tour only, in small groups, with helmets and lamps provided; visitors crawl and squeeze through narrow sections and the trip is not suitable for anyone uneasy in confined space. Temperature underground is a few degrees above freezing year round. Tours run for a short summer season and must be booked ahead through the local operator.
What you actually see
- Over six kilometres of surveyed passage - the longest in Sweden.
- Coral-like calcite formations - which give the cave its name.
- Crawls and narrow squeezes - the standard tour involves both.
- A few degrees above freezing - underground, all year.
When to go
July and August, the tour season. Half a day.
Honest expectations
Tours only, booked ahead, in small numbers. Confined sections rule it out for many people. Clothing gets wet and dirty. It is genuinely remote - a long drive from anywhere.
Nearby
Gaddede is south-east; the Norwegian border is west.
What to pack for Korallgrottan
Chosen from what this place is for. Tap a kit for the full checklist.
Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



