PRICE LIST One fee allows use of all areas. Summer 15.5-31.8  Adults 8 €  Children 4-14 years. 6 € Group minimum: 15 persons Adults 7 €  Children 4-14years 5 € Winter 1.9-14.5  Adults 6 €  Children 4-14years 4 € Group minimum 15 persons Adults 5 €  Children 4-14years 3 € Guided tour (approx. 2 hours) 50 €