A long time ago scientist began to have theories about how the scablands were formed. The scablands are a huge region of the united states. It is just east of Seattle, Washington. The scablands have hundreds of gorges like a canyon that are hundreds of feet deep, there are huge boulders that are scattered across it, hills with ripples, and a water fall bigger than the Niagara but there is no water. In the mystery of the mega flood there was a scientist, geologist J. Harlen Bretz, who had a radical theory about how the scablands were created. He believed that they were formed by a catastrophic water flow and at the time most scientist believed that it was formed by a gradual erosion overtime. The main reason why most scientist didn’t believe his theory was because there was no source of water for what Bretz was talking about at the time. It had not yet been identified. His fellow scientists and colleagues thought that he was crazy in his theory. However, they all changed their minds later when evidence turned up to back up the scientist's theory. There were traces of an ancient ice dam alongside a Montana valley, which held in millions of gallons of water, until the dam itself melted  and it sent sending raging waters across the Pacific Northwest bull dozing everything in its path.