Upper Austria | Upper Canada | Harz | water | Upper Silesia | Upper West Side | Upper Egypt | Clean Water Act | Upper East Side | Water | Upper Franconia | Upper Palatinate | upper house | San Carlos Water | Hot Water Music | Upper Bavaria | Smoke on the Water | Upper Nile | Upper Hutt | Upper Canada College | Upper Swabia | Upper Montclair, New Jersey | Upper Marlboro, Maryland | Upper | water supply | Water Street | Upper Manhattan | mineral water | drinking water | Water polo at the 2008 Summer Olympics |
The signboards mark locations, traces and monuments to mining, to the Upper Harz Water Regale, a medieval water management system, or even personalities in mining history in the Upper Harz mining area.