April 20th, 2018 Explorers Find Human Artifact Impressions in Stone. Evidence of Prehistoric Plumbing? By Todd Jurasek In September 2015, Mike Sulivant and I were out hiking and looking for rock inscriptions. We took a random break from hiking and accidentally discovered something  that we had been searching elsewhere for years for. The thing that … Continue reading Explorers Find Human Artifact Impressions in Stone