Tarzan, Lord of the Jungle Season 2 Episode 4 - Tarzan and the Beast in the Iron Mask Episode Title:Tarzan and the Beast in the Iron Mask.Episode Description:Tarzan and N'kima prepare for a celebration held by the Wazdon Chief Denat in the lost land of Pal-ul-don (which was from the book Tarzan the Terrible). Upon arrival, he sees that Denat isn't himself and flees the guards. When he infiltrates the tower, he finds a man in an iron mask who is the real Denat and that his evil brother Tanat has assumed his identity and has been having the tribesmen mine for gold in a volcano. Now Tarzan must find the key to the mask which is guarded by a Dimetrodon, free Denat, and help Denat expose Tanat's plot.