From a topological point of view, the Thommen mining area is very homogeneous, since the mining areas did not develop depending on the epoch, but the mining centers remained topologically …
From a topological point of view, the Thommen mining area is very homogeneous, since the mining areas did not develop depending on the epoch, but the mining centers remained topologically …
The historical roofing slate mine Barbara-Hoffnung in the Nossern valley between Fell and Thomm consists of two typical roofing slate pits (mines) from the turn of the century, one on …