 His greatest construction activity was in the area of his father's palace, now underlying Structure 10L-16, which he demolished after entombing his father there.He then built three successive buildings on top of the tomb in rapid succession.Very little is known about Rulers 3 to 6 in the dynastic succession, although it is known from a fragment of a broken monument reused as construction fill in a later building that one of them was a son of Popol Hol.