Estela maya que representa a una mujer ofreciendo un sacrificio de sangre mezclada con copal. Después de encenderla, una entidad mitad humana mitad serpiente sale del humo para contestar sus preguntas.
The Maya lords would pierce their tenderest parts and bleed on paper, which would then be lit. The copal-laced smoke would rise, and with it the spirits of the ancestor lords. They protected and communicated with the king, and told him the future. - It is believed that the Mayan leaders would do this in a spiritual way to gain ultimate pain tolerance. Once this happened they would enter a trance or subconscious of some sort.