Foundation for the Advancement of Mesoamerican Studies
Famsi: The Jolja' Cave Project (2001)
Three caves containing pre-Columbian artifacts, murals, and hieroglyphs are documented in this report. Also of interest is commentary on the reports of modern Ch'ol Mayans with regard to ancient belief and current religious belief.
Wikimedia
Wikipedia: Maya Religion
The structure of Mayan religion is outlined, covering beliefs, the priesthood, rituals, sacrifice, gods, etc.