Coflein has this to say about this overwhelmingly massive Lleyn hill fort:
“Garn Boduan is a titanic hill-top enclosure, about 512m from north to south by 384m, defined by two successive and somewhat divergent stone-walled rampart circuits. Within are about 170 circular stone walled structures, generally in the region of 5.2-7.3m in diameter. Upon the highest, eastern edge, of the site is a small stone-ramparted enclosure, about 70m from north to south by 30m. Both the greater and smaller enclosures have two gates, one of each being anciently blocked. A single sherd of pottery indicates second century AD occupation.” [RCAHMW, August 2011].
The siting is not as enigmatic as that enjoyed by Tre’r Ceiri across the way, despite proving a magnificent viewpoint for the whole of Lleyn; nevertheless the defences – and in situ hut circles – stand comparison with ease.