SACRED STONE By Clive Cusssler

Clive Cussler is acclaimed worldwide as the Grandmaster of Adventure. His books are published in more than 40 languages in more than 40 countries. In this fictional book John Ackerman discovers a radioactive meteorite inside a cave that struck the earth 50,000 years ago. Page 40: “This find was huge, like the modern-day opening of a pyramid, like finding an untouched, perfectly preserved shipwreck. With just a little manipulation, the name John Ackerman would be synonymous with great discovery.”

OPENING GOLIATH  By Cary Griffith

Adventure writer Cary Griffith recounts the riveting story of how cave explorer John Ackerman created David's entrance into Goliath's Cave, effectively circumventing government control of the cave.