We found this in our back yard (in Michigan) while digging one day. I'm curious about it, it seems different than others we've found. It's a pretty good size, about the size of a basketball.enter image description here


closed as unclear what you're asking by hichris123 Mar 24 '18 at 21:22

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    $\begingroup$ Required reading: meta.earthscience.stackexchange.com/questions/124/… Then please update your question. $\endgroup$ – Jan Doggen Aug 5 '16 at 15:26
  • $\begingroup$ Could you break and show interior of the rock? also could you take zoom photo of inner and outer portion. For any natural-object, please give a scale. Not necessarily a metering-scale, you could provide a coin, or matchstick etc common object with known size (choose it according to zoom level) $\endgroup$ – Always Confused Aug 6 '16 at 18:25