Mexico finds 'main' skull rack at Aztec temple complex

1	MEXICO CITY (AP) - Mexican archaeologists believe they have found the main trophy rack of sacrificed human skulls at Mexico City's Templo Mayor Aztec ruin site.
2	Racks known as "tzompantli" were where Aztecs displayed the severed heads of sacrificial victims on wooden poles pushed through the sides of the skull.
3	But archaeologists at Mexico's National Institute of Anthropology and History said Thursday that this one was different.
4	Part of the platform where the heads were displayed was made of rows of skulls mortared together roughly in a circle.
5	All the skulls were arranged to look inward toward the center of the circle, but experts don't know what was at the center.
6	The find was made between February and June under the floor of a colonial-era house in downtown Mexico City.