Underwater imaging specialist Blaine Carr joins the team at the Money Pit to examine Aladdin's Cave through borehole L14 using a high-definition camera. The crew lowers the camera to the bottom of the caisson and rotates it slowly, scanning for structural features at depth. The cavity appears open enough for sonar, so Blaine deploys an Echologger DASS710 to produce a three-dimensional map by emitting high-intensity pulses that reflect off walls and objects. The unit needs to run overnight to collect sufficient data. When Blaine reviews the preliminary results with the team, he identifies a solid wall face on one side and a flat surface that could have been carved out. He points out a possible entrance and an area sloping downward at roughly 30 degrees with no visible bottom. Blaine concludes there is potential for a manmade ingress into a natural cavern and suggests moving the sonar unit five or six feet laterally to map the rest of the space. The team agrees to gather more data.
A magnetometer scan of the circular stone feature on Lot 5, processed by Saint Mary's University, produces a surprise. Beneath the circular feature lies what appears to be a much larger rectangular stone foundation, possibly from a different time period. Jamie interprets the layered features as evidence that someone built a structure and occupied the site over an extended period, with the two features potentially representing separate eras of activity. At the circular feature itself, Fiona recovers creamware fragments, Jack finds a square fastener likely from the 1700s, and the team uncovers a light, hollow piece that appears to be a tool handle designed for a wooden insert.
At Nova Tactical in Dartmouth, weapons expert Jeff Parker confirms that a piece found earlier on Lot 5 is a ramrod guide from a musket or flintlock handgun. Based on its size and length, it would have fit a smaller rifle or a handgun. The Roman numerals stamped on the piece are unprecedented in Jeff's experience, and he dates it from the 16th century to the late 1700s. Doug connects the timeframe to the Phips theory and notes that other parts of the musket could still be out on Lot 5. Back at the Interpretive Center, Emma's scans of the tool handle and the fastener show both are iron with no modern indicators and no manganese, and both share the elevated aluminum-to-silicon ratio that keeps appearing in the Phips-connected artifacts. The group discusses the Phips theory presented by Scott Clarke, in which silver from the Concepción was buried on Oak Island, and Marty suggests that Lot 5 may have served as a staging area.
Paul Cote reports that the shoe assembly is being prepared at the Garden Shaft, with the target of reaching 95 feet to breach the tunnel heading toward the Baby Blob. In the War Room, Blaine presents his full sonar analysis as a three-dimensional model. He points out two blue lines crossing over gaps that resemble an opening and identifies a possible entrance into the cavity. The darker red areas represent walls, but the bottom remains invisible because of the 30-degree slope. Blaine does not yet know the full dimensions of the cavern and recommends repositioning the sonar to capture the unseen section.