"Late one August afternoon in 1877, John Muir set out from Pasadena to begin his exploration of the San Gabriel Mountains. The great naturalist was very impressed with Eaton Falls, as he wrote in his book, The Mountains of California: “It is a charming little thing, with a low, sweet voice, singing like a bird, as it pours from a notch in a short ledge, some thirty-five or forty feet into a round mirror-pool.”
He spent the night camped with a blindly optimistic, half-Irish, half-Spanish water prospector, who was convinced that his digging would soon result in a wealth of water. Muir was dubious of this cash flow, and the next morning bade his acquaintance farewell and began tramping up the canyon. After enjoying Eaton Falls, Muir followed bear trails, sometimes on all fours, up the chaparral-smothered ridges of the mountains."