The upper works of the Temple were thrown down and destroyed in the final siege of the war against its hordes. Because of its great power and evil, however, the conquerors did not actually raze the Temple proper, instead sealing its great doors and placing mighty wards of all sorts upon the place and the black labyrinth beneath. Even as great a force as overthrew the Temple could not cleanly deal with what lurked below. Since that great battle, the Temple area has been shunned, its ruins deserted. The nearby village of Nulb has returned to a semblance of normal activity—questionable at best, for the place has always been rumored to house thieves, brigands, smugglers, and pirates. But as Nulb stinks of garbage and filth, the Temple area reeks of the foul corruption and pervading Evil from whence it was spawned. No wonder that both places have again been left to their own devices.
When the Temple of Elemental Evil flourished, earthquakes, storms of all sorts, great fires, and flash floods struck areas nearby with seeming capriciousness. All this ceased when the Temple was assaulted and sealed. You have been advised of all this, and urged to go elsewhere to seek your fame and fortunes. The unease which prevails upon those merely passing near the ruins shows that some wickedness still haunts the place. There are many bad folk in Nulb, and still greater perils amidst the fallen Temple. Yet the lure of such adventure beckons to you, drawing your party as surely as a lodestone draws iron. Warnings against the loss of life—or even worse fates—cannot counter the irresistible pull of treasures secreted deep underground, of monsters still unbeaten, of mysteries to be unraveled. There are whispers of occult places beneath the interdicted Temple, where mighty Evil is yet wrought and noble folk are imprisoned. With care and cunning, luck and great deeds, caution mixed with boldness and daring, you and your associates can win through to achieve exploits of the stuff of legend! The journey of a hundred leagues begins with the first place, and the time for your sojourn has come.
How you and your fellow adventurers plan to overcome the perils of the Temple is a matter that you must decide for yourselves. It is best to reconnoiter from Hommlet? Base your activities from the village of Nulb? Try to make a secure wilderness camp somewhere near the ruin? Or perhaps lodge somewhere within the foreboding Temple itself. The decision is now. It is certain that both vast treasure and horrible death await, so you must gain the one while cheating the other. Fortune and the gods must smile on such an undertaking
For many years, a cult of Chaotic Evil flourished somewhere on the shores of the Nyr Dyv. Although the location of their Temple is lost, these facts regarding it and its followers are known. The cult was based on the premise that the elemental forces of the universe are Chaotic and opposed to mankind, and are thus (from a humanocentric view- point) Evil. The Temple of the cult sought to destroy all works of Good and to disrupt order. Its members were thieves, assassins, brigands, and the like. Fire was regarded as the first elemental evil, and its penchant for Chaos fitted the premise of the cult. Water was likewise worshipped as an even more powerful force of Chaotic Evil, in the form of floods, storms, and raging seas beating upon the land and ocean vessels. The epitome of Chaotic Evil, however, was regarded as a combination of air and earth, represented by blackness and corresponding with the demonic Abyss. This combination was regarded as a complete negation of matter.
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The cult grew powerful and rich, attracting followers of the worst sort and offering them safety within the walls of the Temple stronghold. From this fortress would the followers ride to rob, pillage, and lay waste the lands about, tithing the cult from the spoils of the carnage. Captives from those raids were brought back to the Temple to serve as human sacrifices (children to the fire, men to the water, and women to the blackest Evil) or to slave their lives away in bondage. Besides the extensive upper works of the Temple, a deep labyrinth beneath the place was constructed, but virtually nothing is known about these dungeons except that they were inhabited by a plethora of creatures serving Chaos and Evil. It is rumored that a demon took up abode in the deepest level, to better receive the sacrifices to it.
Nothing important or interesting is ever posted. Eventually the neighbors of the Temple grew tired of these depredations. All Good, both Lawful and Chaotic, banded together to form a mighty host. Their army marched to the Temple, fighting two battles along the way. The first was conclusive, thought the forces of Good who held the field afterward, so they gained the reputation of victory, and their ranks swelled with local men. The second battle saw a great slaughter of kobolds, goblins, ores, hobgoblins, evil men, and the like. The Temple was thereafter besieged, fell, and its inhabitants put to the sword. It is reported by some sources that the Temple and its precincts resisted complete destruction, but the majority state that the whole was razed so that the cult could never emerge again nor could any find where it once flourished.