|Classic Maya collapse|
|Spanish conquest of the Maya|
His life is mostly a mystery for us today.
A monument at Dzibanche records the celebration of the 188.8.131.52.0 k'atun ending by Yax Yopaat in AD 572; his name also appears on a carved slate mirror-back. As Sky Witness is thought to have died in 572 and Scroll Serpent acceded in 579, this king would have reigned for about six years.
- Braswell, Geoffrey E.; Gunn, Joel D.; Dominguez Carrasco, María del Rosario; Folan, William J.; Fletcher, Laraine A.; Morales López, Abel; Glascock, Michael D. (2005). "Defining the Terminal Classic at Calakmul, Campeche". In Arthur A. Demarest, Prudence M. Rice and Don S. Rice (eds.). The Terminal Classic in the Maya lowlands: Collapse, transition, and transformation. Boulder: University Press of Colorado. pp. 162–194. ISBN 0-87081-822-8. OCLC 61719499.
- Martin and Grube 2008:104
- Chronicle of the Maya Kings and Queens by Simon Martin and Nikolai Grube