From the A55 turn south as if heading for Aber falls, drive straight through the carpark and over the bridge, keep going till you run out of road, this is an official free carpark, fits a dozen or so.
Follow the wall and path up the hill, looking for sticky out stones in the wall for climbing easily over the wall. It is here that the ruined stone circle??? or hut circle or what ever it is, is hiding.
Keep climbing the hill following the wall and path untill you can see the stone walls of a large tumbled enclosure above you up the hill some more. Looking down on the enclosure you can also see the cairn stones of Carnedd y Saeson to the left, approach with caution and set your faces to stunned.
What a fantastic place, the monument is in appearance two concentric stone circles with cairn material here and there with a large capstone in the middle of it all. The only detractor is the abundant gorse all over this hillside, it impedes progress at the least and is doing its best to smother the stones at worst.
The cairn is itself very interesting, but the surroundings are what really stuns you, the wooded gorge and awesome mountains and hopefully like me deep blue skies, dont get too comfortable or you could spend a week up here,
just letting the place wash through you and soak you up.
Also, you so have to go to Aber falls if your here its one of the local wonders.