The D&D Forgotten Realms: Adventures in Faerun gives us a new megadungeon to help build and explore—welcome to Myth Drannor

When we think of post-apocalyptic settings, we think of settings like Mad Max, Fallout, and The Last of Us. It's typically in the future, it's typically got (the rusted, broken, disheveled) remnants of the real world, and the level of technology is in decline if not entirely erased.

But many fantasy worlds are post-apocalyptic as well. Especially in Dungeons & Dragons. Dragonlance suffered the Cataclysm when the gods threw down a fiery mountain. Critical Role's world of Exandria went through The Calamity, as Dungeon Mastered by Brennan Lee Mulligan. Dark Sun is post-apocalyptic eco-fantasy as wizards defile the land, draining the world of plant life until there's nothing left but bones and dust. Last but not least, Forgotten Realms was rewritten from the events of the Spellplague when the god of magic was assassinated and magic stopped working for a decade.

On a different scale, the Forgotten Realms city of Cormanthor was peak high magic some 800 years ago. It would later be renamed Myth Drannor after a flying city from the Shadowfell crashed into the city, basically causing a Chornobyl-scale event that forced the inhabitants to abandon their overly magical homes and lifestyles. Don't quote me on that; the wiki page on Myth Drannor is over 4,300 words long—and that's before you click on any one of its hundreds of links.

Its novel-length history notwithstanding, the ruins of Myth Drannor are the first above-ground megadungeon I've seen in the Forgotten Realms. Waterdeep on the Sword Coast has Undermountain a.k.a. the Dungeon of the Mad Mage. Now The Dalelands has Myth Drannor for your campaign-length dungeon-exploration needs.

And just look at these depictions of Myth Drannor. The painstakingly hand-drawn map. The wide-angle view from a nearby village in the massive trees. Visit this page on D&D Beyond to get these two megapixel images of the megadungeon.

Forgotten Realms: Adventures in Faerun (a Dungeon Master Expansion) and Forgotten Realms: Heroes of Faerun (a Player Expansion) released November 11. They finally expanded the map of Faerun beyond the Sword Coast, and they're being epic about it.