Heck was shown in To Heck and Back and Heff in a Handbasket. It is run by Peaches' overlord. It's called "Heck" to censor its real name, which is likely "Hell", as the C and K on the sign are written over two letters that appear to be L's and how Peaches cut Heffer off when the steer was going to say its true name, and said "censors". Heck serves as the other afterlife for deceased mortals who have committed sins in life, and spend eternity being punished there.
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