Join a team of archaeologists as they trek into the lush Honduran jungle in search of the ancient tomb of a bloodthirsty Mayan king in this episode of "Nova." The group heads to the lost city of Copán to prove the existence of Yax K'uk Mo', thought by some to be the founder of a Mayan dynasty that lasted 400 years. Host Bill Flash and a team of experts delve into ruins and bat-filled tunnels as they search for proof of the mythical warrior king.