Cerne Abbas was discussed on Britarch a while back.
Martin Brown wrote;
As for Wilmington, on what grounds is our Giant being impugned? Certainly
the first known record is from 1710 but until only five years ago the
earliest source available was from 1780.
I cannot believe that if a Giant had appeared in Dorset in the mid 17th
century we wouldn't have a series of newsbooks with titles like "A wond'rous
tale of Gog - A giant curiously marked" or "Changing Hills: verily we
make-over my Lord Holles's estate". And as far as Cerne Abbas goes, might
not the Puritan theocrats in Dorchester (see Underdown, Fire from Heaven)
have had something to say when a massive piece of porn appeared on the local
The earliest reference to Uffington's Horse is only 1586, but current
evidence suggests it is much older. Surely that should give pause for
thought in these matters.