I find Woodhenge fascinating BECAUSE of its proximity to DW. Was it roofed? Why the cairn in the centre? Why, when circular buildings were already existent within DW, was it necessary to construct another one nearby with its own circular bank?

To use a Roman analogy (sorry!), it puts me in mind of those temples that are sometimes found outside town walls. I think one was found at Caerwent.

With its own mysteries, Woodhenge is clearly a relevant part of the ritual landscape and therefore just as worthy
as its famous megalithic counterpart. The concrete posts may seem out of place, but they help provide an understanding of how the posts were set out. As others have said, it just takes a little imagination for a concrete stump to become a tall timber.