Bodagrottorna, Nature reserve in Hudiksvall Municipality, Sweden.
The Bodagrottorna cave system extends through 2896 meters of underground passages, featuring large boulders and deep crevices between massive rock formations.
The cave system formed approximately 9000 years ago when a strong earthquake fractured the bedrock during the rapid land uplift following the ice age.
Local geologists and researchers study the cave system to understand the tectonic movements and geological processes that shaped the Swedish landscape.
Visitors require two light sources, proper footwear, and warm clothing to explore the cave system, which remains accessible from July through October.
The cave passages follow straight patterns through crystalline rocks, creating a natural underground maze with sections reaching depths of five meters.
Location: Hudiksvall Municipality
Inception: July 31, 1989
GPS coordinates: 61.65344,17.12636
Latest update: March 31, 2025 04:56
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