Another early start, as we headed off to Iguazu Falls after a scary night´s sleep through the loudest thunderstorm either of us have ever heard.  It woke Rich, which is not an easy thing to do, hence the five alarm clocks he has.  The thunder was within a couple of miles of us, and was followed by hours of torrential rain that we worried may flood us out of our flimsy hostel room.The Falls are in both Argentina and Brazil, and just up the river is...