Suffice to say, the location of this heavily overgrown monument is not exactly advertised on the ground. My third time of asking... (the first unsuccessful through my ignorance; the second curtailed by a young, hostile ‘farmer-type’ trying – and failing comically – to berate me for straying from the path... while farcically having no clue whatsoever as to any ‘burial chamber’ on ‘his’ land)... this was actually well worth the perseverance over the years. In retrospect, an audience is easy enough: approach from the east, not via Sling (i.e. the Chwarel-goch road, where a former ‘phone is annotated upon the map), head through the metal gate and look to enter the field to your left as SOON as possible... then follow the line of ‘telegraph posts’ uphill into the trees.
Image credit: Robert Gladstone