Basalt Cobblestone Quarries District

Clark County, United States

The Basalt Cobblestone Quarries District, in Clark County, Washington near Ridgefield, is a 535 acres (2.17 km2) area which was listed on the National Register of Historic Places in 1981. It included seven contributing sites: seven separate quarries. It is located in the Carty Unit of the Ridgefield National Wildlife Refuge.

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Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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