The third time I floated the Rio Grande River through Boquillas Canyon was smoother than the first two. Since it was my first time to lead an actual group into the backcountry, that seemingly simple fact was especially good. There were twelve of us on that particular trip, paddling two per aluminum canoe. We made the 33-mile excursion down the river on the east side of Big Bend National Park over three days, with two nights spent camping out along the way, only a couple of inconsequential technical canoeing problems, and a straightforward vehicle shuttle at the end. Other than dealing with a certain amount of teenager chaos, we mostly just went with the flow, gazed out at the mighty Sierra del Carmen mountains rising off to the southeast, and pondered the majesty and complexities of the humongous cliff walls surrounding us.