Thunderegg Fossicking | Totally Wild

We discover an area where lava once flowed and uncover thundereggs formed around 200 million years ago!

[@jonnyhartz543]

Wow! Those are wild looking! I wanna go diggin with my lava!

[@JoeDeglman]

Looks like this is not a lava flow, but an electrical channel or some sort along the ground. I think thunder eggs are a form of underground ball lightning, or an electrical pinch, impinged upon a mineral deposit.