Memories> I hiked from the valley floor to Devil's Postpile and back, 120 miles in ten days, alone, once upon a time. Kind of stupid. Got lost twice and navigated with a compass terrain map, land marks, and pine needles. Nobody was there in those days. The trails were old and not maintained. I don't even see them on your map.This is ridiculous numerous people die every year in Yosemite. The week before I climbed Half Dome 5 people died on the trail, and the trail was still packed when I did it.
People have gotten sick (and I think died) from rat shit in the tent cabins, good luck reserving one less than a year out, though.