Only at noon, some light penetrates into this deep, narrow gorge, moist and cool it is at the bottom of up to 70 meters high rock walls at any time. Through the rock leads a secured tunnel past the small thermal water fountain to the spring water grotto.
Opening hours: end of April to end of October, daily from 10 to 17.15.
Admission: adults 6 CHF, children 4 CHF
February 5, 2016
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