Large heavy rock, possibly ancient anchor rock

[Larry49934]

I found this large rock in the woods in the Upper Penninsula of Michigan. found in a low lying area which would have been underwater at an earlier date. Possibly 100's of years ago. The water level has gone down since. Weighs about 75 pounds. Measures 14inches x 14inches, the head measures 4 1/2 inches. As you can see by photos, it has an unusual shape. Anyone have any ideas what it could be? I think it could be an old anchor.

Pictures by Larry49934 - Photobucket

 

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[chatmangreer]

Very possible. Though most have a hole, I have seen them with a groove around it.

 

[romeo-1]

Good old mother nature I think...

 

[Charlie P. (NY)]

Looks like a naturally weathered rock - but it could have been used as you suggest. Though I don't think anyone who might have needed an anchor that heavy would have left a boat out at anchor. That requires a dinghy to get to shore, and if you're that sophisticated you don't use weathered rock anchors.

 

[Hot zone]

should look like these I found in the 80s and first posted here and now

 

[oakhunter27]

looks natural to me erosion

 

[Ammonhotep]

Perfect rock for your zen garden!