Hogsback Tunnel
From Underfoot
Q49418756
mine in Placer County, California, United States of America
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Location: 39.1881, -120.6103, KML, Cluster Map, Maps,
2 places
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Alpha Hydraulic Diggings ⓘ
former gold mine -
Tunnel No. 41 ⓘ
railway tunnel in California
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| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | mine | Alpha Hydraulic Diggings | gold mine | Wikidata | |
| site | tunnel | 1925 | Tunnel No. 41 | Union Pacific Railroad, Southern Pacific Transportation Company, railway tunnel | Wikidata |