Geologist Scott Wolter has reason to believe America has its own Stonehenge. With the help of a young man, Wolter explores the possibility that the Phoenicians are connected to this megalithic site, in Season 1, Episode 6, “Stonehenge in America.” The site is located on private land in Salem, New Hampshire. It is estimated to be close to 4000 years old. More from America Unearthed.