The Lourdes Grotto is a replica of the famous pilgrimage town of Lourdes. It was built in 1917. Here you can take a break during a hike and enjoy the silence of the place.
At the Alp Silwangen there is an entrance for a cave from the Schrattenfluh. However, this can only be visited with a cave guide from the Unesco Biosphere Entlebuch.