In my visit to Bremen, I found this rock. I picked up what seemed to me to be a rock. But after examining it closely, I find it is not a rock .
The surface has what seem to be like the skin of an animal. Like a crocodile or a snake, but more like crocodile, as it has bulges in some parts.
Although it is hard, the one side of it looks like flesh. It even has the color of red meat. I wonder what it is.
