Found in steep wooded area. Can anyone help me guess? Not seeing anything similar on line. The "knuckle" rock is porous looking. The other looks like a claw is coming out of the rock.
I found this neat rock at a rock bar near wagon wheel bridge in boone ia. When I got home I saw this and am so curious can anyone tell make what it is... needed to use jeweled glass to really c it this is the best my phone can do