

Natural or Manmade?
Hi all, I hope everyone is well. My pops found this in the green river in Utah on one of our week long trips down the river with the Scouts (BSA). I’ve always thought it to be very unique but have always wondered if it might’ve been a tool used by someone to straighten arrows n whatnot. Am I wrong in wondering? Is it just a cool rock. Thank you beforehand for your answers/discourse.