This episode I look into the lost city of Atlantis that still remains a mystery today. It was first mentioned by Greek Philosopher Plato, in 360 BC but Atlantis was a thriving civilization 9,000 years prior to Plato's writings. The key to finding Atlantis may be in the Sahara Desert of Africa or underneath miles of ice in Antarctica. Could an ancient alien race from a neighboring planet be the inhabitants of this technologically advanced civilization?