Would this be a paint pot ..

[GroundS.KeepeR]

Found at campsite ..not in river ..my honey hole ..paint pot ?

 

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[quito]

It's very similar to one made of clay that I have in size and shape.

 

[GroundS.KeepeR]

Added up close picture of the inside..

 

[GroundS.KeepeR]

Feels more like hard stone

 

[rock]

Looks like limestone though