During the two-hour inhalation treatment in the natural healing tunnel of the Fairy Grottoes, the oldest of its kind in Germany, the entire organism comes to rest and is strengthened. In a separate part of the mine, you can sit down on a comfortable lounger with a warm sleeping bag and enjoy the unique atmosphere underground. The special climate of 8-10°C all year round with a humidity of around 98% simultaneously strengthens the respiratory function and the immune system - completely natural and free of side effects.