Visited the site carrying a camera with full batteries this time, which was a good start. After a short steep climb and a close escape from personal injury on a barbed wire fence, (farmers in North Antrim don't bother with stiles, they're more likely to be seen on a tractor the size of a small planet.) and a further short wander across pretty unspoilt bogland, I spotted the gleaming capstone of the still-standing tomb peeking above the peat and rushes.
Two portal tombs lie just over 15m apart, oriented E-W. The larger tomb to the east has collapsed, and lies below the present ground level. The western tomb is pretty well preserved. All the stones contain large seams of quartz, and there are a jumble of assorted stones scattered between the tombs which i assume may be cairn material. The capsone of the collapsed tomb is truly massive, measuring 3.75x3.5m, and just over a metre thick. The intact tomb's is slightly smaller, about 2.5m square.
The site would be even more incredible if the peat surrounding the tombs was lowered a little more, although i guess i should just be grateful there isn't a fence and sign three feet from them.
I opted against climbing fences on my return to the forest drive carpark, walking down along the fence to the next gate. On the way down the sloping field by the river i noticed a distinctly man-made, but ancient stone structure. I uploaded a picture in case anyone with more knowledge could enlighten me as to what it could be.
p.s. i live nearby, and have never paid just to use the carpark, although the gates to it are rather zealously locked at 8pm during the summer. If you want to drive to the rather disappointing dual court tomb further along the 'forest drive' you will have to cough up.