Awe. You know it when you feel it.

Standing on Anglesey's southwestern coastline, surrounded by sweeping vistas - green rolling hills, the distant mountains of Snowdonia, and the glittering Irish Sea - you're quite naturally imbued with awe, the emotion the Oxford Dictionary defines as 'a mixture of wonder and dread'.

It is a Neolithic burial chamber on the coast of the island of Anglesey in North Wales. It is an example of a cruciform passage grave, a notable feature being its decorated stones. Similar graves and marks exist across the Irish Sea in the Boyne Valley.

Full excavations were performed between 1952 and 1953, after which the chamber was reroofed with concrete and covered with turf to resemble the original structure. During the excavations two cremated young male burials were found within the south-western side-chamber.

The central area of the main chamber contained the remains of a fire on which had been poured a stew including wrasse, eel, frog, toad, grass-snake, mouse, shrew and hare, then covered with limpet shells and pebbles.

During the excavations five stones with carvings; spirals, zig-zags, lozenges and chevrons were discovered. A sixth stone with carvings was discovered in 2001.

More or less equidistant from Aberffraw and Rhosneigr, it is on the north side of Cable Bay, on the Anglesey Coastal Path, and a short walk from the A4080. It is cared for by the Welsh heritage organisation Cadw.

From April to October at weekends and bank holidays it is possible to enter the chamber, if accompanied by a keyholder (from the Wayside shop in Llanfaelog 01407 810 153).

For further details please see the CADW website.