Well here is a wild bowl that I turned from a small tree burl. I get these a lot on our hunting property and they come in lots of sizes and shapes. I think a limb dies and bugs or something get in the knot and the tree grows these burls. I left it thick and when I got inside the center of the tree was mostly rotten so I left it the way it was. All mother natures beauty uncovered. There is a picture of what they look like before I start.
Thanks for checking it out.
Jeff