Waterfall has become an almost impassable marsh, lightless and clogged with carnivorous flora; a large section has been consumed by the Dead Swamp, awash with dust and bones and rotten clothes, overrun by the Temmie horde and beckoning, mutated echoflowers. Undyne patrols the caves of her old home, obsessive and diseased. The deepest waters are hunted by Onion-san, Shyren tempts those unwitting into her trapped pool, Mad Dummy stalks the dump, and through it all slogs Flowey, starving and searching for more meat. The lesser monsters can only quail and hide from those that would consume them, venturing out to hunt each other and scavenge for scraps others left behind.