This mysteriusly appeared in yard. What better place to ask what it is?
I have no clue but it reminds me of something that happened over a decade ago. I was running the Food Services at our local junior college. One day a student who worked for me brought in this large bone that she had dug up gardening in the yard of the house she rented. She asked me of I knew what it was. Well, I'm no expert, but it sure looked like a human thighbone. I suggested she contact her local Police Dept. and show it to them and that's what she did. They said they would investigate. Well, over the next month she tried contacting the detective she talked to and they never returned her calls. Being curious, I kept an eye on the news, but never saw any mention. I guess it was nothing nefarious but have always wondered about it.