| Name | Wallingford-Back Mine |
| Address | Chemin De La Mine, Mulgrave-et-Derry, Québec, J8L 2W9, Canada |
| Date | 0000-00-00 |
| Time | 00:00:00 |
| Category | unknown |
| Description | What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.... |
| Coordinates | 45.72340, -75.44350 |
| Web address | /places/wallingford-back-mine |