Greetings, Hopefully this will be easy since I only have one picture for now. I noticed this large fossil (?) when I was moving stepping stones. It is about 23cm long and 4cm wide. It is in a large stone I collected on the edge of a hay field, about 8 meters from the Tye River, in Nelson County, Virginia, USA, on the edge of the Piedmont, near the Blue Ridge. I apologize for not having better pictures. I noticed it back in February but gave up trying to identify it months ago when I could not find anything similar. Obviously, I do not have any fossil knowledge but I enjoy learning and it would be nice to be able to know more about what created this curious impression. Thank you for your guidance.