 It is likely, especially considering the emphasis placed on the polydactyly, that this feature is a reference to Pakal’s son, Kan B'alam II, who is portrayed in portraits with six fingers on one hand and six toes on one foot.The standing figure on Pier C is thought to be a woman, possibly Pakal’s mother, Lady Zac-Kuk.The appearance of the psychoduct (a hollow duct that goes from the outer temple into the tomb of Pakal) and the stone band that connects to it have led many to compare the structure to an umbilical cord.