Woodhenge is a Neolithic Class I henge and timber circle monument located to the North of Amesbury in Wiltshire, England - it is closer to Amesbury than is Stonehenge. Before seeing Woodhenge, visitors to the area sometimes anticipate that it might partly resemble Stonehenge. But there is actually little of the original structure easily apparent. Indeed, the site was not identified until 1922, after an aerial archaeology survey undertaken by Alexander Keiller and OGS Crawford.