The Preface Chapter one. We need a plan

The story I'm going to tell you is complicated and hard to believe. There's things in this world we can't explain. Like Minnesota's water fall, the devils kettle. A water fall that drops down into a kettle shape hole in the earth. The water disappears into a endless hole at the bottom of the water fall. Scientist cannot explain where the water goes.

What if a place like that was in your backyard?

Based on true events.