Seneca Sandstone

Operation Redstone: The 150-Year-Old Secret of the Seneca Schoolhouse

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Built from the same stone as the Smithsonian Castle, this tiny schoolhouse carries a story far bigger than its walls.

A Promise Written in Stone There’s a bend in the road where the forest thins just enough to reveal a little red building. It’s quiet here—peaceful, even—but something about the place hums with old energy.That’s the Seneca Schoolhouse Museum, built in 1866 from the same fiery red sandstone that gave the Smithsonian Castle its fairytale … Read more

Operation Red Stone Shadow: The Hidden History of the Seneca Quarry Ruins

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Seneca Quarry Ruins covered in ivy near the C&O Canal.

TMP Covert Ops #10 | Stories stolen between meetings Hidden in the Woods, Written in Stone Just twenty miles upriver from Washington, D.C., a forest hides the skeleton of an empire.Tucked between the towpath of the Chesapeake & Ohio Canal and the Potomac’s slow bend, the Seneca Quarry Ruins sleep beneath vines and sycamores.I parked … Read more