Korallgrottan is a marble cave at the northernmost tip of Jämtland, near Ankarvattnet, Sweden. It was discovered in 1985. So far, six kilometres of it have been explored, making it Sweden's longest cave. Members of the public are not allowed to visit Korallgrottan without a guide.
|This article about a location in Jämtland County, Sweden is a stub. You can help Wikipedia by expanding it.|