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In Beyond Mammoth Cave: A Tale of Obsession in the World s Longest Cave, James D. Borden and Roger W. Brucker provide gripping first-person accounts of the discoveries, including Roppel Cave, that made Kentucky s Mammoth Cave three times longer than any other cave in the world.

Borden, a relative newcomer, and Brucker, a veteran explorer, bring a personal and sometimes conflicting view of their roles as adversaries in a race that lasted from 1972 through 1983 to find big cave. They describe hazardous adventures, precarious climbs, and close calls from falling rocks. The perils...

In 1925 the geological connection between Flint Ridge and Mammoth Cave was proved when dye placed in a Flint Ridge spring showed up in Echo River at Mammoth Cave.

That tantalizing swirl of dye confirmed speculations that were to tempt more than 650 cavers over half a century with the thrill of being the first to make human passage of the cave connection. Roger Brucker and Richard Watson tell not only of their own twenty-year effort to complete the link but the stories of many others who worked their way through mud-choked crawlways less than a foot high only to find...