I've always been a little intrigued by Mr Peterson's mysterious 8,000 year old "25 foot long seal shaped rock carving" which he apparently located somewhere between Killin and Lochearnhead. I'm not sure he ever told anyone where it actually was.
I remember reading a wee article in The Herald about it... but drawing a blank when checking D&E, Canmore and even perusing his photos in his tome in a bookshop proved a dead end. I have to presume there was shome mishtake...
Is the location known?