[efreak]

As a member of the general public, I find this quote from Wikipedia interesting:

> The word henge is a backformation from Stonehenge, the famous monument in Wiltshire. Stonehenge is not a true henge, as its ditch runs outside its bank, although there is a small extant external bank as well

So the word henge comes from the name Stonehenge, but Stonehenge is not a henge. This could be incorrect, however, as nearly every etymology I've found online seems to use almost the exact same wording as either Wikipedia or dictionary.com (the source cited on Wikipedia)