ruhr valley(n = noun.location) ruhr - a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany;
is a kind of geographic area, geographic region, geographical area, geographical region
is a part of deutschland, federal republic of germany, frg, germany

death valley, false lily of the valley, great rift valley, kobuk valley national park, lily of the valley, rift valley, rift valley fever, ruhr, ruhr river, san fernando valley, san joaquin valley, shenandoah valley, silicon valley, sun valley, valley, valley fever, valley girl, valley oak, valley pocket gopher, valley white oak, wild lily of the valley