A pit discovered during magnetic surveys prior to the excavation of Coneybury Henge, and often referred to as the Coneybury Anomaly, has been associated with the remains of Neolithic feasting
Richards, J. 1990 The Stonehenge Environs Project, London: English Heritage Archaeological Reports 16/York: Archaeology Data Service.
https://doi.org/10.5284/1028203
http://archaeologydataservice.ac.uk/archives/view/eh_monographs_2014/contents.cfm?mono=1089075
More recently, re-analysis of the pit's contents has suggested this feature was also associated with occasional contacts between hunter-gatherer and farming communities that coexisted in the Stonehenge area
Gron, K., Rowley-Conwy, P., Fernandez-Dominguez, E., Gröcke, D., Montgomery, J., Nowell, G. and Patterson, W. 2018 'A meeting in the forest: hunters and farmers at the Coneybury “anomaly”, Wiltshire', Proceedings of the Prehistoric Society 84, 111–144.
http://doi.org/10.1017/ppr.2018.15
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