Tumble down pond is a wonder on its own! Makes you appreciate what mother nature is capable of. I did the loop which the rangers consider a very difficult hike and I would have to agree with them, the elevation gain on the hard trail up is no joke. But at least you can go for a swim when you get to the pond! Water is super clean and beautiful and hopefully we can keep it that way! Let me add there is an easier way to reach the pond, basically your decent trail on the loop, so with this easy way up it gets pretty crowded, especially with children, so if possible go off season. Camping is allowed by the pond but if my memory serves me right camp fires are not allowed.