Mein Hirion is a monument consisting of three standing stones, all around six feet tall, placed in a triangular arrangement. They sit atop a low ridge, commanding views across the northwest of Ynys Môn.

The stones are very distinctive, with profiles that appear to lean or curve towards the inside of the triangle, creating a sense of enclosed space, like a fist beginning to clench.

The walk up to the stones is potentially very boggy in wet weather. When I visited, the ground was still sodden from rain a day or two previously, and the fields would have been impassible without decent footwear.

I approached Mein Hirion at the end of a day of exploration on Ynys Môn. The light was fading, but the views out towards the horizon were still impressive - especially when the sun briefly broke through the clouds. This is an unusual and atmospheric collection of stones, full of character, benefiting from a commanding position that lends them an air of authority as they stand timeless watch over the surrounding landscape.