Yesterday I stood on the Laurentian Divide. If you paid more attention that I apparently did in Geography class, you know that a drop of rain falling on the north slope of that ridge will drain to the Hudson Bay and on the south, into the Mississippi and eventually the Gulf. I met the Laurentian once before on this trip, back by Itasca. It curves north from there and then northeast across the state of Minnesota.  Apologies to my geography teachers, but I didn’t even know there was a Continental Divide other than the one in the Rockies!