Germany, Rhenish Mountains, Mülheim/Ruhr, Diepenbrock mine
| Country: |
Germany
|
| Province: |
Rhenish Mountains
|
| Locality: | Mülheim/Ruhr, Diepenbrock mine |
| Country: |
Germany
|
| Province: |
Rhenish Mountains
|
| Locality: | Mülheim/Ruhr, Diepenbrock mine |