800 Hotels in Switzerland - Booking.com Save
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Booking.com/hotels-switzerland (sponsored link)
 

Association of Cavers of the Hogant Region (HRH) Save
Founded in 1979. Coordinates exploration and scientific research, exchanges data and information, and promotes conservation. Includes contacts. [German, French and English].
http://www.sghbern.ch/page/hrh/hrh.ht...   

Hoelloch Cave Research Association Save
Dedicated to the exploration and survey of the karst area of the Muotha Valley. Includes history of the Hoelloch system, photo gallery, literature and contact information.
http://www.hoelloch.org   

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