Where that can was, the closest trail head was days away, accessed by way of Bishop on the east side of the Sierras. From that side, getting to the PCT trail is switchback hell. Yes, I picked it up and yes, I carried it for days on my way to Kings Canyon where we had arranged for people to meet and drive us out (we were hiking from north to south, roughly a 120 mile trek). But I still wonder how it got there. I'm guessing horse-packers. The trail otherwise was clean and free from litter. Just this one can.