Mondmilchloch, Solutional cave in Pilatus massif, Switzerland
The Mondmilchloch extends 108 meters into the mountain with a vertical gradient of 20 meters, featuring multiple chambers and water passages throughout its length.
Conrad Gesner first documented the cave in 1555, introducing the term 'Lac Lunae' for the white calcite deposits found within its chambers.
The cave became a reference point in medical texts during the 19th century as physicians recommended its mineral deposits for various treatments.
Access to the cave starts from Alp Birchboden following orange trail markers through pastures and forest, reaching an entrance at 1710 meters elevation.
The cave contains specific microcrystalline calcite formations that established it as the geological type locality for moon milk deposits in scientific literature.
Location: Obwalden
GPS coordinates: 46.96680,8.21944
Latest update: March 10, 2025 12:29
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