Seneca Mill and Quarry Ruins
Landmark
Cross Streets: Near the intersection of Tschiffley Mill Rd and Chesapeake and Ohio Canal Bywy/Old River Rd
13201 Tschiffley Mill Rd Poolesville, MD 20837 ·136.28 mi
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Reviews
yelp 5.0
2 reviews
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Heather W.
09/06/22
Ruins of a quarry from the late 1700s and stonecutting mill from early 1800s. To see the ruins go upstream from Seneca Creek Aqueduct a hundred yards until you come to a trail on your right....
More Michael B.
12/05/24
Seems like a nice fable. The Real Problem is there is zero evidence of any hole or ditch or quarry of any kind (even the side-shaved kind) massive enough to acocunt for the Smithsonian castle...
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