Deep in the lush green jungle of Mexico lie the ruins of an ancient civilization steeped in magic and myth, rivaling any on earth, created by the people known as the Maya. More that 1,000 years ago, a great Mayan temple-ctiy flourished and thrived. Known as Palenque, it has kept many of its secrets hidden from modern archaeologists -- until now. Mysterious Spirits of the Mayans will take you there to scale the heights of Palenque's great palace and uncover clues about this strange and wondrous place. Why did ancient priests alter significant dates in the civilization's history? Were children sacrificed to honor the dead? And the greatest puzzle of all -- what happened in 835 A.D. that caused the Maya to simply vanish? Find out!