53°24′31″N 4°23′8″W / 53.40861°N 4.38556°W
The Werthyr standing stone is a standing stone located to the west of Amlwch, Anglesey, Wales. It is around 3.1 metres (10 ft) tall. [1]
The stone is thought to date back to the Bronze Age. [2] Early writing suggests that there was a second upright stone and a long capstone, both of which have since disappeared. [1]