大增鍾乳洞, Limestone cave in Okutama, Japan.
This 45-meter-long cave system features white crystalline formations and growing stalactites throughout its accessible chambers and passages.
The cave was discovered in 1982 during backyard construction work by the property owner, leading to its development as a geological attraction.
The site serves as an educational facility where students and researchers examine geological processes and limestone formation patterns.
Visitors must schedule guided tours with the owner's family and photography is prohibited inside to protect the delicate formations.
The cave maintains constant lower temperatures and contains underground water features, including streams and small mineral pools.
GPS coordinates: 35.82403,139.07694
Latest update: March 26, 2025 15:37
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