Turtle formation – megalithic structure in Switzerland
Links:
https://ramar.space/3d/Schildchrotstei/index.html
https://www.steinmuseum.ch/solothurner-megalithweg/
https://archivapp.sagenhaftezeiten.com/de/profiles/ae8c0f8191ae/editions/aa20e0b56a9bd0bce141/pages/page/14
https://ramar.space/3d/Schildchrotstei/index.html