Access: Easy to reach from the Dolmen de Crucuno, as it is right beside the road from Crucuno to the D105. The monument is up a high verge, which is short but quite steep.
Take the D781 between Erdeven and Plouharnel, turning NE to the village of Crucuno. You can't miss the Dolmen of Crucuno as it is against the wall of a farmhouse-type building on the village green.
To reach Mané Groh, continue through the village for around 500 metres, just past a forestry road into the woods on the left. Park on the right (east) of the road, the dolmen is on the left. Or park at the little carpark a little way up the forestry road and walk back.
Coët-er-Bei is only a few hundred metres away along the forestry road, bearing right and is signposted from there.
Visited Sunday 17 April 2005
A beauty! I failed to find this when I was in Brittany in the late 90s, mainly because I had really lousy maps, no time, a partner who wasn't very interested, and I thought it was in the woods....
Nothing really to add to Jane and Mark's descriptions, so I'll shut up!
Just about 500ms away from Crucuno quadrilateral up among some trees is Mane Groh dolmen - a lovely allee couverte with four transepted chambers and lots of capstones still up. A little stone cist, not unlike a water trough for horses, stands very close by.
I came here for two reasons, firstly because I have not been here for two years and on that occasion I took no notes and secondly to try and find the second dolmen claimed to be to the north of here. I have already failed on the second count as I traipsed around much high gorse and heather and found nothing.
So now to Mane Croch, I now remember why I liked this place so much the last time and how my photos did it no justice. A long passage leads to a chamber that it transepted into four. The stones are all of a lovely chunky local granite. No mound covers this dolmen now and there is no capstone over the centre of the four chambers. It could be that this part of the roof was corbelled and that this site was a mixture of those two construction methods, both common in the area. In fact at nearby Mané Braz the roof is formed by a sort of 'mega-corbelling'.
The layout of this monument is clearly similar to UK sites such as West Kennet long barrow and I like to believe that the dolmens of the Carnac area were a direct influence on those of southern England.