Seriously, I recall reading about a German salt mine where several ancient celtic salt miners have been discovered over the centuries.
Perhaps you mean Austria?
The Man in Salt, Salzwelten, Hallstatt, Austria
Salinen Austria AG | by 2005 | staff
Posted on 09/09/2005 1:10:50 AM EDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1480756/posts
The German salt mine is in Schwaebisch Hall.
I was fortunate enough to be stationed there from 1977 - 1980. A LOVELY TOWN.