In 1909, an article published in the "Phoenix Gazette" told the story of an explorer named G. E. Kincaid who discovered a massive underground complex containing mummies and artifacts while on an expedition for the Smithsonian. Today, the Smithsonian and archeologists across America deny that any such discovery was made. Is there a lost city of ancient Egyptians located within the caves of the Grand Canyon? We discuss Kincaid's Cave and the mystery of the Lost Grand Canyon City on this episode of Dark Matters Supernatural Radio.