🔎 UNIDENTIFIED Idk please help

[Krookedest1]

Found at river along with several artifacts but don't have a clue what this is

 

[Back-of-the-boat]

Another water worn stone and the drill looking hole is where a smaller stone was trapped in a small hole then spun in the current until it wore through the bottom of the stone. You can see this phenomenon in rivers with large boulders in them.