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Growth of the tourist gallery  504 meters
Level variation of the tourist gallery 17 meters
Height of the waterfall and the chimney 77 meters
Lake area 75m2
Air temperature 10°
Water temperature

Growth of the Dead One’s gallery 480 meters
Growth of the superior gallery 1'200 meters
Total growth of the Fairies’ Cave network 2'184 meters
Total level variation of the Fairies’ Cave network +166 meters

Public opening 1'863
Number of visitors in 1868 about 3’000 people
Number of visitors in 2011 about 25’000 people