Pasel adit, Radhausberg, Kreuzkogel massif, Naßfeld valley, Gastein valley, Hohe Tauern Mts, Salzburg, Austria

This adit, also known as 'Radhausberg-Unterbau', 'Thermalstollen' and 'Heilstollen', was driven during the second world war, to explore the Radhausberg gold deposit at a greater depth, where rich ores were believed to exist. Its entry is situated on the northwestern slope of Radhausberg mountain, at an elevation of 1280 m (above sea level), just below the Taddäus adit. After a distance of 2425 m, and cutting through 140 mineralized clefts, the sulphide-bearing veins were finally reached. The ore was largely leached out by rising thermal waters, though.

Ref.:
A. Strasser: Die Minerale Salzburgs, 1989