Kummakivi is a 500.000 kg rock in Finland that has been balancing on another rock for 11.000 years - eviltoast
  • disheveledWallaby@lemmy.ml
    16·
    6 months ago

    Likely glaciation, the bottom rock was likely on the bottom of an ice sheet and millions of tons of ice moving over it over time had smoothed it out.

    The top rock is probably from many miles away and was carried and placed there from the receding glacier. To me the top rock looks like it is a completely different type of stone then the bottom.