
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 wereto tempt more than 650cavers...

This is the gripping and suspenseful story of the magnificent achievement that has been compared to the conquest of Everest-- the final connection between the Flint Ridge and Mammoth Cave systems.

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 wereto tempt more than 650cavers...