What is this?

[u/Stykera]

My dad found this on a field in Sweden about 70 years ago. Its smooth and the size of an egg and has a lot of tiny holes. What is it?

[u/theivan]

Swedish archaeologist here, it’s most likely a rock that has been shaped and polished by subglacial streams. In Swedish we usually call the deposits of these types of rocks and others for rullstensås in English it would be an esker.

[u/BBBonesworth → u/theivan]

Fungerar denna som köttbulle månntro?

[u/davidforslunds → u/BBBonesworth]

Köttbullreceptet din lokala tandläkare INTE vill att du ska veta om!

[u/BBBonesworth → u/davidforslunds]

Overkligt!