Larrun is a mountain at the western end of the Pyrenees. It is located on the border of France and Spain, where the traditional Basque provinces of Labourd and Navarra meet. Its prominence is 670 m. 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 Bas…Larrun is a mountain at the western end of the Pyrenees. It is located on the border of France and Spain, where the traditional Basque provinces of Labourd and Navarra meet. Its prominence is 670 m. 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.