Lligwy Cromlech, Ynys Mon

OS Grid Ref: SH 50143 86062

Geo URI: geo:53.3501,-4.2528
Latitude: 53° 21' 0" N
Longitude: 4° 15' 10" W 
    

Cromlech is Welsh for a megalithic tomb consisting of a large flat stone laid on upright ones; a dolmen (Wikipedia)