Following the directions given by Les I found three candidates for the cairn cemetery.
NJ8908604581
This cairn as described by Les is almost 5m wide and about 0.5m tall. Some kerb survives on the site which is the least tree covered. Cairn material also survives poking through the turf.
NJ8901104568
Sadly this cairn has been badly trashed and has misplaced kerbs scattered. Trees cover the site which sits at 4m wide and 0.5m high.
NJ8902904578
In much the same condition as the previous site but the one I feel would do best if excavated.
Visited 17/3/2017.
Good work Drew. Shows what the experienced eye can achieve.
Cheers Les, very similar to Brathens.