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Buttermilk Hill USGS Benchmark

Buttermilk Hill USGS Benchmark

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Buttermilk Hill USGS Benchmark

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Location: Westchester County, New York, United States

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oliviakellis

September 12, 2023

Hiking

This plaque from 1833 commemorates the 200th anniversary of the Buttermilk Hill triangulation station established by the US Geological Survey. This station is recognized as the oldest triangulation point in America. The actual survey marker is located about half a mile west of where this commemorative plaque stands.

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