In particular, this complex and some others which were gradually revealed appeared to have much in common with structures built at Tula, believed to be the capital of the Toltecs and which was located about 100 km north of present-day Mexico City.
Særligt syntes komplekset og andre, der gradvist blev blotlagt, at have meget mere til fælles med konstruktionerne i Tula, som menes at have været toltekernes hovedstad, og som lå omkring 100 km nord for den nuværende Mexico City.