Thanks for taking the time Ken , judging by the title of the talk K15 was going to be central , it’s hard to believe that he hadn’t had a look in the field or some good pics but to be taken in by Thomas’ drawing of K15 seems a bit remiss , at least he had the bottle to back down .BTW K15 has a few incisions , not on the drawing either , plough scars are a bit unlikely considering it’s situation . Possible defacement ?
It looks like he was covering old ground Kintraw is a bit of a cause celebre in archaeoastronomy .Thom proposed that the winter solstice sun would set in a notch formed by the Paps of Jura You can’t see the notch due to an intervening ridge so a higher observation point was suggested with the stone as foresight but this means crossing a deep gorge and finding a spot on the other side , a ledge was discovered by Thom’s Granddaughter and this later excavated by Mackie .No evidence of human activity was discovered but Mackie claimed it was man made .
Dougie Scott surveyed the site in 2003 and showed that if the intervening ridge was treeless , looking from ledge the notch would just be visible but the sun wouldn’t have set in the notch he comments “As much as I admired Prof. Thom, it looks as if he projected his winter solstice concept onto the landscape without testing it by observation. By doing so he created a myth, which many people still believe today.” The Bush Barrow lozenge fits in nicely with the Lozenges at the Bru but the astro claims from Thom and North seem unlikely and could never be proved either way . Ruggles and Gordon Barclay have taken Mackie to task in various entertaining papers in Antiquity . What is sad is that all of Thom's good work doesn't get mentioned due to the emphasis on the wild speculation .