France and the United States together excavated 357 million tons of dirt while digging the Panama Canal, during roughly fifteen years of total labor. In Powell’s day, the ancestral Colorado was capable of transporting the same amount of soil, by weight, in less than a fortnight.
France and the United States together excavated 357 million tons of dirt while digging the Panama Canal, during roughly fifteen years of total labor. In Powell’s day, the ancestral Colorado was capable of transporting the same amount of soil, by weight, in less than a fortnight.
Putting that area into perspective is always a challenge.
