My mind is blown! Doing research for my book "By the Gates of the Garden of Eden", I have found some interesting items! There are over 48,000 affected acres of Abandoned Mine Locations (AML) exist in the State of Missouri. Compare that to Pennsylvania's 1,300 AML. Centralia, Pennsylvania is the famous "Burning Mine" where the game/movie "Silent Hill" was based on. It is estimated that for every 10 acres of AML, there is one inhabitant. So... conservatively, there could be 4,500 people living underground in Missouri. Are they in tribes? Families? So many questions!