The cave that the Kanohina system seems poised to supplant in the record books is on the other side of the Big Island. It was likely created during a 15th-century eruption of a different volcano ...
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Claustrophobic Crawl Into The Volcano Room Pettyjohn CaveWe returned to Petty John’s Cave with a mission—to reach the Volcano Room, a massive underground chamber shaped like its namesake. The journey took us through tight, claustrophobic crawls, slippery ...
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The darkest corners of Pinnacles, one of California's least-explored national parksStepping carefully through Balconies Cave in Pinnacles National Park ... canyons and monoliths resulting from ancient volcanic activity about 23 million years ago. I marveled at the pinnacles ...
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