This is Stela C, the first of the seven 18 Rabbit had erected in the plaza and it still has traces of the paint that would have made these sculptures even more remarkable at the time they were first unveiled. This is a Janus like sculpture with one side facing east and portraying a young man and this one facing west showing him as an old man with a beard. The sun rises in the east and sets in the west after a long journey so the symbolism is pretty obvious.