As I well know the feeling of not finding a site, I searched a bit. http://www.ssdi.ch indicates these coordinates: 46.25618N 7.42943E. When I read their report,
Link to SSDI Object no 1956.01 report, I come to the conclusion that the stones are not accessible any more. But I never was there, so I cannot confirm this.
Something is not right. This message is just to keep things from messing up down the road