"If you aren't joking"
No, it's gen.

Have just phoned the museum in Avebury, offering it to them on the basis of that speculation.

I know when they display things they also display the finder's name. So the suggestion "found by Heritage Action in the cause of duty" is a real possibility, though I expect we can come up with something even more pointed ;)

"CERNE GIANT LOOKALIKE".... cheeky sod, can't see any facial resemblance personally.

Pete, my scanners bust. I'll try to sort something out with a camera later though. Thanks very much for the conducted tour, the Americans were highly impressed. The stuff you were telling about your latest discoveries were mind boggling. Are you going to spill the beans here?