Pyramid shaped rock

[WiredEFX]

This was found in southern Illinois along the Wabash river, 1 mile south of Mount Carmel. Can’t figure out what it is or what it was used for. It’s pyramid shaped, one side a bit longer than the other.

 

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[Tdog]

Hey bro, welcome. I'd say that's a natural formation based on the smoothed, water-worn surface. I don't see any evidence of alteration by man. Nor does it resemble any tool that I know of that shape. Keep at it though. This is a great hobby.

 

[MosesOfTheSouth]

hey wired! welcome. great job with the pictures for your first post. i've never personally seen a natural rock form or be altered that way by nature. i look forward to what more experienced people have to say.

 

[MosesOfTheSouth]

ps. not disagreeing with terry.

 

[The Grim Reaper]

Tumbling media most likely. I see no evidence of it being altered by ancient man.

 

[Fred250]

I have a pyramid rock also, have never posted it because pics don’t do it justice and people will tell me it’s just a rock, which is understandable.

 

[flinthunter]

I agree with tumbling media. Worked in a machine shop for years and have seen a lot of similar pyramid deburring media.