Brewery Shaft

Brewery Shaft in Nenthead, Cumbria, is a historic, 100-meter (328 ft) vertical mining shaft completed in 1839 to access the Rampgill Vein. Renowned for its 3.6m diameter concrete lining and 1903–1905 hydraulic compressed air system (Hydromat) that powered machinery, it is a key feature of the Nenthead Mines, sometimes accessible for guided underground tours - https://www.nentheadmines.com/