Oneida Number Three Tunnel

The Oneida Number Three Tunnel (also known as the Oneida #3 Tunnel) is a mine tunnel in Schuylkill County, Pennsylvania, in the United States. It is one of five major mine tunnels in the watershed of Catawissa Creek. The tunnel discharges into Tomhicken Creek downstream of the mouth of Little Tomhicken Creek. The tunnel was constructed in the 1930s and a passive treatment system was installed at the site of the tunnel in 2009. The tunnel is more than a mile long.

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

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