I see old "backcountry camps" all the time out in the woods and every time there is a fire ring or evidence of a fire I see old partially burned up plastics and crap in there. Some animals always end up diggin it up and spreadin it around.
On a side note:
About 30 years ago I was hiking with my dad into the back-country spot to hunt elk west of Klamath Falls Oregon. We were back in there about 5-6 miles. We're following this small creek up to some meadows that we knew about in there, laying in the Creek, was 4 beers!
We're talking the black and white generic "BEER" can beers with the pull tabs. They had seen some wear as some of the paint was worn off from the silt and stuff hitting the cans but we pulled em out. He popped one open and took a sip... then spit it back out... said it was kinda skunky...LOL.
We poured the rest out, rinsed and crushed the cans and then I put em in my pack to take out. About 100 yds or so up the creek we came across a small "log cabin" shack kinda thing, it was about 8x8 and about 5' tall. It was made with about 5" lodgepoles, Funny thing was all the trees around were 18-24" thick. My dad remembered when he was a teen him and G'pa were in there in the early 60's and found it. Maybe some old crusty mt hunter used that & had brought in the "beer" for his hunt camp or something.
Found a camp a couple years back where some dudes brought in some home brews in wine size bottles with crimp-caps, There was a whole case and 8 left, with some pine needles fallen onto the wood crate. Probably been there a couple weeks at most.
So,,, I took it upon myself to sample one as I camped there for the night... Man talk about HIGH GRAVITY... whoooo doggy, I caught a real buzz off about 1/2 of one of those bottles. Brought a couple others home. It was kind of a hefi-ipa cross kinda thing.. Dude knew how to brew thats for sure!