Mepụta ụdị nke ahịrịokwu a dị mgbagwoju anya Ọ dị na nsọtụ ọwụwa anyanwụ nke mpaghara Ruhr, kilomita iri na ise n'ebe ndịda nke Dortmund.
N'ezie, ụdị okwu dị mgbagwoju anya nke ahịrịokwu ahụ bụ "Ọ dị na nsọtụ ọwụwa anyanwụ nke mpaghara Ruhr, 15 km n'ebe ndịda nke Dortmund, ebe osimiri Lenne, Volme na Ennepe na-ezute osimiri Ruhr. "