Dennert promoted the preservation of mining monuments and published several books about mining in the Upper Harz.
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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.
One Tree Hill | One Tree Hill (TV series) | tree | Christmas tree | Herbert Beerbohm Tree | fir | Porcupine Tree | Douglas fir | The Joshua Tree | The Hanging Tree | Quebracho tree | Joshua Tree National Park | Fir | Under the Yum Yum Tree | Happy Tree Friends | Tree of Life | Tree of Knowledge | tree line | Tree | Oak Tree | tree of life | Tea Tree Plaza Interchange | Rockin' Around the Christmas Tree | Radial tree | Joshua Tree | FIR | The Tree | The Learning Tree | The Juniper Tree | The Casuarina Tree |