In Episode 210, Jeff Belanger and Ray Auger stroll the shores of Lake Winnipesaukee in Meredith, New Hampshire, searching for a mysterious stone unearthed back in 1872. This fist-sized, egg-shaped artifact has several images carved on it, including a face, corn, and other geometric shapes. It appears to be Native American in origin, but matches nothing seen by tribes local to this region. This rock raises so many questions that some have speculated it could be a Thunderstone--a rock forged in the sky by some deity and then dropped to the earth. The mystery stone has perplexed archaeologists ever since it was discovered.