Caer Gai
Llanuwchllyn, United Kingdom
Caer Gai (also Caer-gai) is a Grade II listed Roman fort in the district of Penllyn, Gwynedd, Wales, UK. It is located about 1 mile or 1.6 km north of the village of Llanuwchllyn, and the same distance west of Llyn Tegid (Lake Bala).
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).