The team examines a core from borehole D.25-8.25 at a depth of roughly 35 feet. Terry tells Rick Lagina this is an area with no prior drilling records. The material is undisturbed, and Terry calls it within the range of normal. The target lies at about 150 feet, where groundwater testing over the previous three weeks showed high traces of gold and silver and where the team has drilled through a tunnel on multiple occasions, along with evidence of what they hope is the Chappell Vault. The next day, Leighton brings over a core from 109 feet that is very soft and contains wood, including what appears to be a vertical piece that could indicate a tunnel. A core from 158 feet, however, yields nothing, and Craig suggests moving to a new location further south. Drilling of borehole D.75-6.6 begins, and a core from 119 feet contains numerous small pieces of wood mixed with a grainy material that could be the bottom of a structure. The sample from 129 feet holds backfill but no wood chips. Mike then reports nothing solid at 157 feet and an empty core barrel.
On Lot 5, Fiona tells Rick and Gary Drayton that a test pit has not produced the expected results and asks Gary to scan the area. Gary detects iron on the wall of the structure. He moves to the pit where Moya MacDonald is working; the government has designated the feature a "special place," meaning any objects must be removed by archaeologists. Gary locates several iron artifacts and then picks up a non-ferrous signal. The next day, Laird Niven searches for the non-ferrous target and recovers a button with a design on the front. It will go to Emma Culligan for scanning.
Near the Eye of the Swamp, Alex Lagina tells Craig about the log and cobblestone feature found the previous week, noting it seems to point toward the Eye, which the team determined was manmade and which Dr. Ian Spooner dated to about 1680. Billy Gerhardt begins digging and exposes what appears to be another manmade rock feature. Alex finds a brick, and Billy spots a piece of cut slate. The brick does not look modern, and Craig notifies Laird. The group discusses a possible connection to Anthony Graves, whose homestead was located just north of the swamp at Joudrey's Cove. Graves was said to have made purchases on the mainland using Spanish coins. The following day, Laird says the bricks are similar to those from Lot 5, and he has never seen a slate-and-brick structure like this one. When Dr. Spooner arrives, he says the bricks appear handmade, and Laird suggests sectioning one. Steve Guptill will survey the feature, and Rick is notified. Rick tells the group that the Graves family searched for hidden treasure on the property, and this could have been an ideal hiding place. He wants the team to continue the investigation.
In the lab, Rick, Craig, and Jack Begley join Laird, Emma, and Gary to review scans of the button. The CT scan reveals a design on the face. Emma reports it is made of a copper alloy with zinc, lead, and a small amount of iron. Laird notes he has never seen a button with two rivets, which in this case hold two layers of metal together. The XRF map scan shows a floral pattern on the front. Emma dates the button to the 1700s or earlier. The group discusses the style and whether the dating could fit the Phips theory.
