"The abundance of hardwood timber below the Sharp Mountain Gap at High Bridge determined the site of the famous Swatara Furnace. Thousands of cords of charcoal were consumed by this furnace before anthracite outcroppings were stripped in the wilderness about a mile away. Once famous Swatara stoves were cast and finished here when the furnace was converted to a foundry." -Black Rock: Mining Folklore of the Pennsylvania Dutch by George Korson