"The World Encompassed" states that the Plate of Brass was nailed to a great poste. The experts were unsure of what or where the "poste" actually was. A dictionary of Middle-English terms revealed that the word "poste" meant a stump in the 1500s. So, a great "poste" would be a large stump. The "poste" was discovered in 2005 on Greenbrae Ridge. The date June 17, 1579 had been carved into the stump in Roman numerals. Some of the Roman Numerals representing the date June 17, 1579 are clearly visible.