https://researchdata.se/en/catalogue Search results en Photogrammetric 3D model of a Double-Edged Shaft Hole Axe of porphyry from the Swedish Middle Neolithic, collected in the field from Nygård in Buttle parish, Gotland, Sweden and held in the collections of the National Historical Museums in Stockholm. Link to the Dynamic Collection platform   https://dyncoll.ht.lu.se/artifact_view.php?item=414 Link to Sök I Samlingarna   https://samlingar.shm.se/object/A527C2E2-6E60-45F0-BFDB-CB7D195794F2 Mon, 27 Apr 2026 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/doi-10-5281-zenodo-18981517 https://researchdata.se/en/catalogue/dataset/doi-10-5281-zenodo-18981517 National Historical Museums Hagaeus, Thomas