Welcome to H day, where I'm gonna raise a little hell.
barathrum - A bottomless pit or hell
fire and brimstone - Eternal punishment in hell
pandemonium - Literally means abode of all demons (or hell), from Greek pan-, "all," and daimon, "demon(s)."
Hel - (Norse mythology) goddess of the dead and queen of the underworld
Hades - (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone
Sheol - The abode of the dead in the Bible.
I hope you've enjoyed your tour of the underworld. Please remember to pay Charon on your way out.