One afternoon in the mountains, they chanced upon a tall column of white water that roared from the lip of a cliff into a pool beside a broad, flat clearing in the woods. It was not the first time the expedition had spotted waterfalls on the march, but the ones they had passed previously were miniature affairs bubbling into streams compared to this towering, mist-shrouded giant. It was as good a spot as any to establish camp for the night, not least because it was more scenic than anywhere they had reste...