"Seeing Inside a Rock : This is a fossil cyanobacterium, about 650 million years old, from Kazakhstan. The top section is a standard optical image of fossil cyanobacterium. In the middle is a confocal optical image of the same fossil. Bottom left is a close up of a section of confocal optical image (equating to the red box on optical image). At the bottom right is the Raman 3-D chemical image of the same boxed region."