Eightercua is a four-stone alignment (stone-row) Megalithic tomb, located 1.5 km south-south-east of Waterville, County Kerry, Ireland. The tallest stone reaches 9 feet in height, and the alignment streaches for twenty five feet in an east-west direction. Surrounding artifacts, including remains of a possible tomb and an ancient enclosure, suggest that the site had a ritual purpose at one time. Eightercua is thought to originate from circa.