You could have just said you didn't know....
The reason I asked was I was wondering if you knew if they were excavated, or the stones were taken, or if they were ploughed out, i.e. whether it was worth me going to have a look. But it looks like you've answered that now, thanks.
Moth you should apologise to me and Jane for implying that Pete G and Octopussy are the only sensible ones here...