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Download the audioguide (in Swiss German) onto your smartphone or iPod touch for lots of fascinating facts and funny surprises as you walk round the cave!
iPods can also be hired at the entrance; the audioguide is in Swiss German dialect.
From 1 April to 31 October
Open daily from 9 am until 5 pm continuously (last admission)
including Sundays an public holidays
Telephone +41 (0)41 761 83 70