RM2DN3AD4–Lintel 25. Lady K'ab'al Xook. Lady Xook is in the hallucinatory stage of the bloodletting ritual. She conjures before her a vision of a Teotihuacan serpent. This lintel is one of a series of three panels from Structure 23 at Yaxchilan. Limestone, 725-760. Late Classic Maya. Yaxchilan, Chiapas state, Mexico. British Museum. London, England, United Kingdom.