The Mysterious Island: Here Be Dragons - Paperback

Below the English town of Ipswich a tunnel boring team is digging through solid rock when unexpectedly, they break into an ancient cave system filled with animal bones. Strangely, there were also the remains of men, knights in armor, some crushed, and some seemed to have had their bones and flesh melted. And there was one more thing found: a huge, egg-shaped ruby that glowed like a setting sun.