Master Miguel Calleros is co-founder of “Haltun Ha” Center of Mayan Studies of Nolo, Yucatán, and is the foremost authority on Chichen Itza and the Pyramid of Kukulcan where scale model replicas of the Pyramid of Kukulcan have been built to study the light and shade phenomena of the equinoxes and solstices. He was also the Coordinator of Cultural Services Unit in the Archeological Zone of Chichen Itza, operated by the Yucatán State Government. He has authored several books on the Maya and has been a highly respected Mayan cultural teacher for the last fifteen years. He has been working with the Tro-Cortesiano Codex with the goal to improve dates and sequences of the Mayan calendar contained therein. He continues to present numerous seminars and conferences both in Mexico and abroad, emphasizing the topics of Mayan astronomy, philosophy, symbolic art, ceremonial centers, and the cosmovision of the Mayan universe.
Master Calleros and his wife Ana Maria Rios Arjona perform ceremony together, representing through their partnership the balancing of the masculine and feminine. Ana Maria is a keeper of the Mayan fire ceremony and a healer.
During the September 1998 Prophets Conference in Mérida, Master Calleros' wealth of knowledge and his heart felt teachings proved to be of great inspiration and utmost value. In a conference participants words: "Miguel Angel Calleros' extraordinary presentation includes the sacredness of the Mayan Mantra based language (as energy is embedded in the sounds of the names of each of the sacred sites), was a wonderful precursor and opening for me. This lead to his remarkable heart-opening closing meditation that plunged me so deep into the depths of my soul that I couldn't stand up or talk with anyone for a long time afterwards."