Obviously, (close your eyes if you don't want any illusions shattered) there's a little Photoshoppery going on.
I was sittting at Dunbeacon stone circle for part of it. If I remember correctly the 'shrooms were somewhere near this place, but sadly not that big :-(
Occasionally I swap my picture for one of me in my old car in front of a billboard advertising Lucozade (sp?). The picture has three bottles of said orangey-yellow liquid supporting a capstone along with the slogan "Megalithic Energy". This advert appeared in Ireland for just a week or so, which just happened to be when myself and Julian* were going around Sligo for TME.
*He took the photo .... cue comments about name-dropping :-)