Is this decorative carving or natural formation?

[floresmm]

Would love to know more about this find. Perhaps nutting stone or are those finger holes for use as a scraper? Could this be decorative carving or natural formation on the corner? Reminds me of a dragon. Was found eastern Montana along Yellowstone river.

 

[Treasure_Hunter]

Natural, they are called Omarolluk, Omar's for short.

 

[antmike915]

Also agree with natural, still looks cool though.

 

[ArfieBoy]

Great find! Had I found it, it would definitely be a keeper! Thanks for sharing.

 

[floresmm]

Thanks for your replies!

 

[rginn]

Natural, and I would have brought it home with me.

 

[dognose]

very unique formation but not native American