We arrived in the mountains of Yellowstone National Park in complete darkness. Again. You would think we’d have learned our lesson about arriving at campsites in the dark, but clearly, we had not. We drove through 45 minutes of winding darkness passed deer and elk, and got barricaded by 4 large bison before reaching camp. It was a cool 30° F outside (or -1° C for more dramatic effect) and way too cold and late to set up camp so we camped in the car near to all of the food so that the bears would have an easier time finding us. No,…