Strontium, oxygen, sulfur, and carbon isotope analysis was performed on 131 pig remains from four late Neolithic ceremonial sites: Durrington Walls, Marden, Mount Pleasant, and West Kennet Palisade Enclosures.
Notes on verification
Confirmed by peer-reviewed original study (Madgwick et al., 2019, Science Advances), a Cardiff University press release, and independent archaeology news coverage, all corroborating the sample size, sites, and isotope methods used.
Sources
- Stonehenge-era pig roasts united ancient Britain, scientists say (nationalgeographic.com)
- https://www.science.org/doi/10.1126/sciadv.aau6078 (science.org)
- https://archaeology.co.uk/articles/news/monumental-meeting-points-in-neolithic-britain.htm (archaeology.co.uk)