Hergert Quarry
From Underfoot
Q49418146
Q49418146
mine in Washington County, Oregon, United States of America
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | tunnel | Burnside Tunnel | road tunnel | Wikidata | |
| site | tunnel | NW Cornell Road Tunnel 1 | road tunnel | Wikidata | |
| site | tunnel | NW Cornell Road Tunnel 2 | road tunnel | Wikidata | |
| site | tunnel | Robertson Tunnel | railway tunnel | Wikidata | |


