Mamon (Aktemto in the NES version) is a small mining town in Dragon Quest IV. When Estark was sealed into slumber and entombed by the humans, Mamon was built over his tomb to keep him from ever being released. However, over the centuries he was forgotten, and the inhabitants of the town began to mine beneath it. Eventually they started to approach the lower catacombs and unknowingly released a miasmatic gas that emanated from the tomb and up the shafts and started poisoning the villagers, slowly killing everybody one by one. Over the course of the game, the townspeople become fewer, the graves become more numerous and all the buildings fall into a state of disrepair.