The area is little changed from the mid 19th century, when Samuel Lewis said in his 'A Topographical Dictionary of Wales' (1849): The hamlet of Park-Mill, forming the most populous part of the parish, [Ilston] is yet extremely rural; and the surrounding scenery, which is characterized by features of tranquillity and seclusion, is enlivened by the small rivulet called Pennarth Pill, winding along a beautiful dell, in which are the ruins of an ancient chapel.

[2] Parkmill once lay within a Medieval deer park, Parc le Breos, which was established in the 1221–32 CE by John de Braose, Marcher Lord of Gower as an enclosed area of about 2,000 acres (800 hectares).

[6] The cromlech is located in Coed-y-Parc, on the floor of a dry narrow valley in about 500 acres (2.0 km2) of woodland, owned and managed by Forest Enterprise (Wales), in a limestone gorge, at an elevation of about 50 feet (15 m) above sea level.

On the opposite side of the lane to the car park a kissing gate, wide enough for a wheelchair to pass through, leads to an asphalt track that runs past the cromlech and the length of the gorge, allowing flat, disabled access to within about ten feet (3 m) of the site.

The black tie event consisted of the world premiere of the Danny Boyle film Alien Love Triangle (2002), starring Kenneth Branagh, Alice Connor, Courteney Cox and Heather Graham.