Nice one Ken matey,
it's gotta be a good contender cosidering when it was first recorded, the second-hand nature of the sketch and the fact that there was a stone wall across the site when it was first recorded.
http://www.europreart.net/cgi-bin/baserun.exe?_cfg=mappa.cfg&_tar=_record&_fil=%22Dingle%22%24area&_act=top