Thanks for adding pictures and details for these Mayenne sites for us. I always liked Mayenne as a place. But I do wonder what it is that I took that picture of, it certainly looks like something - too long ago now to fully remember exactly where I was - from the days before gps and I was just working off very undetailed paper maps (and the ign has updated and added many more prehistoric sites since then), not really sure what to expect as this was my first full day out in my campervan! Over 20 years ago now!
Something is not right. This message is just to keep things from messing up down the road