I was astonished too. Sage and Max looked completely done after we reached the summit. As we descended the slide, we discussed where we were going to camp. After some rest, chocolate, Goldfish crackers and water, both girls decided they wanted to walk just a little farther....then a little farther...then a little farther...until we were five flat miles from the car. Then they decided they were going to hike out. Got their second wind, I guess. I was okay with this since I had the tent and sleeping bags, figured if they gave up we could always find a nearby place to crash.