OC-1

Season 7 hole where a wooden tunnel at 150 ft was dated to 1706; the episodes call it a borehole and, once, a caisson. In Season 8 its spoils yielded a rosehead spike chemically almost identical to one from the Lot 15 serpent mound, with a fly ash cement coating. Craig Tester moved the Season 8 drilling grid toward OC-1 after work around RF-1 failed.

No public source gives this hole's position.

What the Drill Found

1. 0 ft
   SurfaceTop of the hole
2. 50 ft
3. 50 ft
   OtherRemains of the Hedden Shaft
   The Curse of Oak Island, S07E19
4. 55 ft
5. 105 ft
   WoodPit-sawn timbers
   The Curse of Oak Island, S07E19
6. 15 ft
7. 120 ft
   OtherLarge piece of bone, possibly human
   The Curse of Oak Island, S07E19
8. 27 ft
9. 147 ft
   DocumentBottom of a small barrel or keg and hand-hewn timbers from undocumented construction
   The Curse of Oak Island, S07E19
10. 147 ft
    WoodKeg bottom (wooden)
    Artifact Vault
    Keg bottom (wooden) →
11. 150 ft
    TunnelWooden tunnel
    1706
    The Curse of Oak Island, S08E10
12. 59 ft
13. 209 ft
    BottomWhere the hole stopped, as reported by the source

Depth not recorded

• –
  MetalSquare-shanked rosehead spike from stored spoils; 0.5% phosphorus, no manganese, pre-1840 wrought iron of pre-1790 style
  pre-1790 style (Dr. Christa Brosseau)
  The Curse of Oak Island, S08E10
• –
  CementCoating on the spike identified as low-calcium fly ash cement
  The Curse of Oak Island, S08E12
• –
  CementCement/concrete vault layer
  Artifact Vault
  Cement/concrete vault layer →

Rows are in depth order; the column on the left is the hole, and a figure between rows is the stretch with nothing logged. Depths as reported by each source.

Sources

• The Curse of Oak Island, S07E19 (episode summary)
• Artifact Vault: Borehole OC-1, approximately 147 feet depth
• The Curse of Oak Island, S08E10 (episode summary)
• The Curse of Oak Island, S08E12 (episode summary)
• Artifact Vault: fly ash cement coating on a rosehead spike from borehole OC-1 spoils, Season 8
• Positions and depths: see how we know this on the Money Pit Map.