Alcyon Lake Dam
From Underfoot
Q34802058
'
-
Location: 39.7319, -75.1419, KML, Cluster Map, Maps,
8 places
-
Alcyon Lake Dam ⓘ
-
Alloway Lake Dam ⓘ
-
Almonesson Lake Dam ⓘ
-
Atco Lake Dam ⓘ
-
Ballingers Mill Pond Dam ⓘ
-
Center City Commuter Connection ⓘ
railway tunnel in Center City Philadelphia -
SEPTA east-west subway tunnel ⓘ
tunnel under Philadelphia carrying trolley lines and the Market-Frankford line subway -
Spring Garden Street Tunnel ⓘ
vehicular tunnel under the Philadelphia Art Museum
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | cave | Alcyon Lake Dam | cave | Wikidata | |
| site | cave | Alloway Lake Dam | cave | Wikidata | |
| site | cave | Almonesson Lake Dam | cave | Wikidata | |
| site | cave | Atco Lake Dam | cave | Wikidata | |
| site | cave | Ballingers Mill Pond Dam | cave | Wikidata | |
| site | tunnel | Center City Commuter Connection | Southeastern Pennsylvania Transportation Authority, railway tunnel | Wikidata | |
| site | tunnel | SEPTA east-west subway tunnel | Southeastern Pennsylvania Transportation Authority, tunnel | Wikidata | |
| site | tunnel | Spring Garden Street Tunnel | road tunnel | Wikidata | |