In a single chamber there are actually comprehensive carved hieroglyphs that mention rulers of Chichen Itza And maybe of the nearby town of Ek Balam, and include a Maya day inscribed which correlates to 869 AD, one of the oldest these dates found in all of Chichen Itza. For travelers https://unescoworldheritage69257.tinyblogging.com/about-travel-vlog-80585515