Synopsis

It was the largest flood in two million years, presenting a profound scientific enigma. A dissenting geologist became convinced that floodwaters a thousand feet deep had eroded vast stretches of the American Northwest near the close of the last ice age. The established scientific community dismissed his hypothesis, yet he persisted in seeking an explanation for such unimaginable violence. Ultimately, a clever solution quieted the doubters: evidence of a colossal ice dam, half a mile high, which