Heee he, no but to use a little fear to get our date:>}but on a serious note the place does stand out because we can guess quite well compared to other places how old the Stone circles,henges, barrows, standing stones and Quoits around are but KAH has no comparison so we can't guess beyond things like stone shapes and position in the landscape which we've done yourselves, this is the case for a date i'd be putting forward Roy and i can't see how they could disagree with that reasoning, and if you could get a date from them it would be a big scoop for any future book you may do on the place.