Claudia I. Alvarado León obtained her PhD in Mesoamerican Studies from the Universidad Nacional Autónoma de México. She was a postdoctoral fellow at the University of Copenhagen in the Central Mexican Writing Systems and Calendars project. With over fifteen years as researcher in the Xochicalco project, she focuses on socio-political development processes and their impact on the built environment. Currently, she teaches at the Escuela Nacional de Antropología e Historia and El Colegio de Morelos.Christophe Helmke is Associate Professor of American Indian Languages and Cultures at the Institute of Cross-cultural and Regional Studies at the University of Copenhagen, Denmark. Since 1996, he has participated in and led excavations, archaeological reconnaissance and epigraphic documentation at a variety of sites in Belize, Guatemala and Mexico. Between 2019 and 2024 he served as co-Principal Investigator of the Central Mexican Writing Systems and Calendars project, funded by the Velux Foundations.