(n.) A quagmire.

baygall bemire bog down bottom bottomland bottoms buffalo wallow cesspool cloaca cloaca maxima drain dump everglade fen fenland garbage dump glade hog wallow holm marais marish marsh marshland meadow mere mire moor moorland morass moss mud mud flat peat bog quag quagmire quicksand salt marsh septic tank sewer sink sink in slob land slough sough stodge sump swale swamp swampland taiga wallow wash