The Cochno Stone: A Massive, 5,000-Year-Old Cosmic Map Discovered in 1887, the mystery stone remained buried for decades in order to protect it from vandalism. One of the most fascinating archaeological mysteries is the discovery of the so-called Cochno stone. Discovered in 1887 by the Rev. James Harvey, the ancient stone measures 13 meters by 7.9 and features around 90 … Continue reading The Cochno Stone: A Massive, 5,000-Year-Old Cosmic Map