On our last trip to Sequoia/Kings Canyon (SEKI) we visited a few lakes that get a little more traffic than is usual in the backcountry. Every area deals with this in a different way, since that additional traffic has three major impacts on the wilderness experience. One of those is the toilet facilities. Too many backpackers can have a very ugly impact on a heavily used campsite area. So in a few places in the backcountry, you'll find a vault toilet. It's not exactly our idea of wilderness, but we understand the problem, and we don't have a better solution.
We were particularly taken with this toilet at Twin Lakes in SEKI. It was certainly not your traditional vault toilet, and M was quite sure she we never find it easy to use...but still; nice effort. And a lovely view from the throne.
It's good being the king!