We have 15" buried pipelines that are used to move water up to irrigation ditches.
Couple different lines/caps, etc..
One spring I smelled funk coming from a cap I was about remove.
Spun it off and almost puked. A coon and 2-3 pups had crawled down into the line(to probably take a chit...) and got trapped when we fired the pump up. Water pushed them to a sealed off tee and they drowned and cooked out for a month.
Mmmmmm.
Also try and remember to seal all caps when not in use.
