Defenders of the Earth (1986) : 1x31

When a two-hundred square mile area of Morocco mysteriously disappears, the Defenders investigate- sans Kshin, who is instructed to choose any book from Mandrake's library for a book report. While Kshin flips through the blank pages of a book titled "Enigmas", Flash, Rick, L.J. and Jedda enter the unexplained area and discover a primitive wall with a door in it. Suddenly the wall image appears in Kshin's book, along with an inscription telling how to get inside. As our heroes are nearly crushed by falling rocks, Kshin relays the information and stops the avalanche. Kshin, once again reading from the book, instructs the Defenders, who are now inside the shrine, to push the gold keys on the control panel, revealing the lost city and removing the jamming field surrounding the area. Mean-while Mandrake and Lothar track down a notorious jewel thief and recover the Eye of the Dragon which is missing from the wall. Back inside the shrine our heroes awaken the Sleeping God before Kshin warns them that he is unstoppable, and it looks like certain death for the Defenders. As Flash, Rick, L.J. and Jedda are about to be boiled in oil, Kshin arrives on the scene and convinces the creature that they are here to help; while Mandrake produces the crystal which will allow the Sleeping God to return home, thereby saving our Champions.