Visited 2nd August 2003: Why is everyone in such a rush to get to Barclodiad-y-Gawres? This little cairn (or tumulus depending on who you ask) is on the way, and well worth the detour (a detour of about 3 meters from the footpath). The remains of a cist are clearly visible in the middle of what's now a rather flattened mound.
NB. It's tempting to keep stepping backwards trying to get a photo of the cairn with the sea behind it, but be careful of the quarry that has been dug just to the east of the site.
Frances Lynch, in 'Prehistoric Anglesey' calls this site Mynydd Bach, after the name of the headland it stands on. It was excavated at the same time as Barclodiad-y-Gawres, but little was found, and it has been tentatively dated to the Beaker period. It's a lovely little cairn, and in its own quietly understated way is more atmospheric than its more famous neighbour.
Gwynedd Archaeological Trust list this site as TUMULUS (REMS. OF), N. OF BARCLODIAD Y GAWRES, so I've renamed it Port Nobla Cairn, after the beautiful beach just to the north of it. If there's a proper name for this tump, I'll do the gentlemanly thing.