We met them at the Bodmin Minimeet too, if you remember.
Quite sincere guys as I recall. Lots of paperwork to back up their research, which was going to be published. I wonder if they ever made it into print?
Yes I've seen Dave and his friend since Alan when they appeared on a day I was at the quoit. They are very committed and were attempting to point things out to me but I was not convinced, maybe because I have my own line of enquiry/research going on and wasn't prepared to see beyond it. I still feel Trethevy ended up no more or less that a traditional Cornish portal dolman with my main interest centering around its original build and what, if anything, has happened to it since. By what I am discovering it is likely to have had a chequered history possible even starting life off as a simple trilithon before either circumstances or a shift in beliefs changed it to something like we see today. But what I mentioned once before I feel is 100 accurate and that was the words uttered to me by my at the time totally uninterested son and something I had always thought myself...."If you had all those pieces laid out on the floor you'de never put it back together like that would you dad!"
Well I copied all those pieces out and put them back together in a more sensible way and have come up I hope with a realistic conclusion which will hopefully be in print in the not too distant future.