Williams Quarry
From Underfoot
Q49458992
mine in Northampton County, Pennsylvania, United States of America
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | cave | Angens Pond Dam | cave | Wikidata | |
| site | cave | Lost River Caverns | cave | Wikidata | |
| site | tunnel | Oxford Tunnel | railway tunnel | Wikidata | |
