Lost Worlds of the Desert

The decaying remains of a lost military base and the haunting remnants of a forgotten Nevada settlement are now barren wastelands; experts investigate the secrets behind these desert landscapes to uncover how they were built and why they were abandoned. This episode is a mashup of S07E07 "The Doom of El Dorado," S05E05 "Journey to Outcast Island," and S02E03 "Arctic Hell Pit."