 All three of the stelae were discovered by <unk> Maler in 1901 near one of the site 's main temple , the O @-@ 13 pyramid . Stela 13 was possibly erected on a terrace reached by the pyramid 's main stairway , and Stela 18 lies in a row on the plaza in front of the aforementioned stairway . Stela 23 , on the other hand , was erected at the very base of the pyramid . This pyramid was most likely the burial place for Itzam K 'an Ahk II , and — seeing as how Ha ' K 'in Xook , Yo 'nal Ahk III , and K 'inich Yat Ahk II all revered the site as a dynastic shrine — it is further evidence to back the argument that Ha ' K 'in Xook was the son of Itzam K 'an Ahk II . 
