Though Palenque had been examined by archaeologists before, the secret to opening his tomb — closed off by a stone slab with stone plugs in the holes, which had until then escaped the attention of archaeologists—was discovered by Mexican archaeologist Alberto Ruz Lhuillier in 1948.
Deși Palenque a fost examinat de către arheologi înainte, secretul de a deschide mormântul său, închis cu o lespede de piatră, a fost descoperit de arheologul mexican Alberto Ruz în 1948.