Captains of Industry

I'm not sure, but I think the thing just to the left of center in the pond is a beaver lodge. They used to have a dam right across the waterfall, which rearranged things a bit, but it eventually got washed away. Being clueless in the field of beaver behavior, I don't know why they didn't rebuild it, but I have to admit it's nicer not to have the path flooded out most of the time.