I live in Alpena, Michigan. I’ve read and heard that there is or was petrified wood in the water around Sulphur Island and in nearby Squaw Bay. I heard that around the Island, you used to be able to find whole logs of what I think was palm wood. I haven’t been able to find any, but I don’t really know what to look for except I heard that it is black. Does anyone have a picture of pet. wood from here?