The longest log flume ever built extended over 62 miles running in the high elevations of the Sierra Nevada Mountain range of California. Built by the Kings River Lumber Company in 1890 to harvest the giant redwoods. Regrettably,
…the operation felled over 8,000 giant redwood trees, all over 2,000 years old. Of those trees felled, only 23% made it to the mill. The sheer weight of the giant trees caused them to shatter into millions of unusable pieces while the portions that were too large were blasted with black powder, but this method also proved unsatisfactory.