BBCnews is carrying this summary of recent findings concerning Sima de los Huesos (the pit of bones), in Atapuerca, near the town of Burgos Spain. The find contained the remains of 23 individuals, considered to be Homo heidlebergensis (what used to be called late Homo erectus), about 350,000 years old. So far the demographics of just who's in the pit seem to indicate a massacre, or perhaps a plague of some sort.