1) Mesoamerican site 
Huapalcalco is an archeological site located some 5 kilometers north of Tulancingo in the state of Hidalgo, Mexico. The site was built on the west slope of the `Tecolote” hill; the slope is separated east-west by a ravine that forms two sectors at the foot of the hill and two more on the top, all of which contain archaeological vestiges. The s.....