bayou in Louisiana, in the southern USA.
I'm fond of using swamps in my games; they start with a high level of creepiness, and only get worse when you start adding mist and drizzle and nasties like huge rotting undead alligator zombies. And you just know, if you happen upon any folk actually living in there, at best they're going to turn out to be Deliverance-style inbred rustics who would just love to have you for dinner — stewed or fricasseed, whichever. I just love watching a party, stranded on a squishy, oozing island, trying to figure out how to get to dry land without actually getting into the water with all the things.
Is it wrong of me to enjoy their consternation so much? I don't think so.