Larrun holds an iconic place in Basque culture. It is covered in dolmens, stone circles and other neolithic monuments and was held to be a sacred place in Basque mythology. It was said to be the home of Lehensugea, the first serpent. Later, and perhaps as a consequence of the ancient sacred sites, the summit had a reputation as an akelarre or ritual meeting place for witches. Up until the 18th century, local villages paid for a monk to live as a hermit at the top of the mountain to keep witches away and ensure good winds.