My first name is shared with the landowner - 'David'. They are his cairns (I only found them).

I've just dug out a scan of these cairns from a distance, that can be used to locate them, and will post it in a moment. There is a tonne of stuff in that valley and I particularly appreciate people going to look at things during the winter (when I am not there).

I should point out that the shape of the cairns is very close to that of a later Viking shieldboss. Many of the local placenames (including 'Knar' and 'Dale') are of Scandinavian origin. There is a final scientific proof for the age of the cairns - as there are fragments of scots pine and birch buried at a similar depth in the peat. If it were possible to analyse the growth rings - I have a suitable section just here beside me - then a fairly good date could be assigned.

If you do get there - and the weather holds etc - then the section of loose peat is at the lowestmost point of the two cairns. It's a spade's width and square - should still be loose. Leave nothing but your crisp packets - it's all Right To Roam up there. The cairn on top of Grey Nag is well worth a visit - but you'll have exposure before you get there !