The site consists of six concentric oval rings of
postholes, the outermost being about wide. They are surrounded first by a single flat-bottomed ditch, deep and up to wide, and finally by an outer bank, about wide and high. Subsequent theories have indicated that the weight and pressure of the soil over the years could have caused the skull to fragment. After excavation, the remains were taken to London, where they were destroyed during
The Blitz, making further examination impossible. Cunnington also found a crouched inhumation of a teenager within a grave dug in the eastern section of the ditch, opposite the entrance. Most of the 168 post holes held wooden posts, although Cunnington found evidence that a pair of standing stones may have been placed between the second and third post hole rings. Excavations in 2006 indicated that there were at least five standing stones on the site, arranged in a "cove". The deepest post holes measured up to and are believed to have held posts which reached as high as above ground. Those posts would have weighed up to 5 tons, and their arrangement was similar to that of the
bluestones at
Stonehenge. The positions of the postholes are currently marked with modern concrete posts – a simple and informative method of displaying the site. Further comparisons with Stonehenge were quickly noticed by Cunnington: both have entrances oriented approximately to the midsummer sunrise, and the diameters of the timber circles at Woodhenge and the stone circles at Stonehenge are similar. ==Relationship with other monuments==