I have posted this before, I got some cool ideas of what this might be. I wanted to re post this to get some more opinions and ideas. When I found this, I was taking a walk at Richardson Grove State Park. Long story short, I saw a big ancient redwood tree with a tiny hole in the base of it, I felt like looking inside of it to see if there was any animal nest of some sort, instead I found this, a strange stone carving, I am thinking that this could be old, the tree was off the trail about 30 feet, so I don't think anybody walking from the trail could of tossed this in it. I am thinking that this could be from the native tribes that use to live there, such as the Sinkyone people, the Wailake people, and the kans'-cho-so-ring-I- be village.