A grouping of temples southeast of the Palace are known as The Cross Group. Other structures at Palenque include Temple XIII adjacent to the Temple of the Inscriptions. In 1994 a secret door was discovered that led to the interior of the pyramid and an underground temple with three rooms. There are no inscriptions to identify this apparently royal person. In June 1997 DNA tests were performed on the skeleton of Pacal to determine his relationship with this unknown woman.
Results have yet to be published.
Temple XII Also on the same mound is Temple XII, the first structure visitors see as they enter the site. It is also known as the temple of the Skull and the Temple of the Dead Moon. During 1992-94 over 500 objects were excavated from this Temple. Temple XIV is alongside the Temple of the Sun. The temple is in poor condition but a relief similar to the others in the cross group is on the rear wall.