CANMORE calls it a ‘Clyde-type long chambered cairn’ and puts its overall dimensions as 56 metres long and 16 wide. Sounds about right. Full description is well written, very detailed and of course accurate, but possibly makes it sound a bit less impressive? Or perhaps not.
Anyway, it’s at rcahms.gov.uk/canmore/details_gis?inumlink=24120
An aside…
While writing this, at around 2am just before giving up for the day, I searched ‘Auchtubhmore Hill’ on the web, looking for info on Edinchip. The search returned various documents on the HMSO site, relating to restriction of movement, slaughter etc of possible ‘radioactive sheep’ as a result of the Chernobyl disaster.
Honestly – I was afraid I’d fallen asleep and was dreaming of the person currently known on TMA as Atomic Mutton…!