Theresia ore mine
From 1859 to 1886, lead, silver, copper and zinc ore were mined from the spoil dump of the lower tunnel sole of the former "Erzgrube Theresia" and transported to St.Goar-Fellen for smelting. The upper tunnel sole reached about 20m into the mountain, the deep tunnel bottom, from the Baybachtal, approx. 250 m. The passages in the mountain followed the ore veins and were in places 10 to 15 meters wide. Because of "impossibility" and inefficiency, the operators stopped mining ore after only 27 years During the Second World War, many Morshausen citizens sought protection in the abandoned tunnels from the artillery fire of the advancing American troops
Murscher ores and their origin
Around 400 million years ago, the rocks were sediment from the seabed. The layers of different materials (sand and clay) deposited and solidified over millions of years. During the mountain formation 400-200 million years ago, the solid layers were folded into a mountain range by the continental shifts. This folding resulted in deep cracks and cavities. Hot, highly mineralized water made its way up along this path, and over time various minerals crystallized from the water and filled the cavities. The minerals include iron, zinc and lead ores, which were mined as ore veins in the period from 1859 to 1886. Source: Text information board