Grottes de Baume, Underground cave system in Baume-les-Messieurs, France.
The Grottes de Baume feature approximately one kilometer of accessible galleries showcasing stalactites, stalagmites, and limestone formations created through thousands of years of geological processes.
These caves have been known since medieval times, serving as shelters and religious retreats for hermits and monks who left behind artifacts and inscriptions throughout the centuries.
Local legends speak of mysterious underground springs that provided vital water resources during difficult periods, making the caves significant spiritual and practical sites for regional communities.
The caves operate from July 1st to September 30th with mandatory guided tours lasting approximately one hour, maintaining an interior temperature of 11°C and requiring warm clothing.
The site claims to possess the highest underground vertical drop in Europe, accessible only through guided tours due to safety considerations and geological preservation requirements.
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