Hilarius in Helmeringhausen

Entrance to the “Hilarius” tunnel in Helmeringhausen.

September 2007 (Hans Martin Köster)

#Olsberg #Helmeringhausen #Hilarius #Mining #Cooling #History #Bergbau #Kuehlung #Geschichte #Sauerland #Hochsauerland #Stollen #tunnel #Eingang #entrance #door #doorsday