Woodhenge is a Neolithic Class I henge and timber circle monument located in the Stonehenge World Heritage Site in Wiltshire, England. It is 2 miles north-east of Stonehenge in the parish of Durrington, just north of Amesbury.
Crawford credits the discovery to an aerial photograph taken by Sqn Ldr Gilbert Stuart Martin Insall VC in 1925 (Crawford, Air-Photography for Archaeologists, 1929). Maud Cunnington excavated the site between 1926 and 1929.
Most of the 168 post holes held wooden posts, although Mrs Cunnington found evidence that a pair of standing stones may have been placed between the second and third post hole rings. Recent excavations (2006) have indicated that there were, in fact, several standing stones on the site, arranged in a "cove". The deepest post holes measured up to 2m and the height of the timber posts they held has been estimated at up to 7.5m above the ground. The posts would have weighed up to 5 tons and the arrangement was similar to that of the bluestones at Stonehenge.The positions of the postholes are currently marked with modern concrete posts which are a simple and informative method of displaying the site.
Further comparisons with Stonehenge were quickly noticed by Cunnington; both have entrances oriented approximately on the midsummer sunrise and the diameters of the timber circles at Woodhenge and the stone circles at Stonehenge are similar making the reasons for the name more understandable.
There are various theories about possible timber structures that might have stood on the site and about, that they may have been aligned on positions of the Sun on the horizon. For many years work on the study of Stonehenge had overshadowed any real breakthroughs in the understanding of Woodhenge. However, recent ongoing investigations as part of the Stonehenge Riverside Project are now starting to cast new light on the site.