The Dyson MegaDelve is a dungeon map that I started in late 2014 and finished in early 2015. It started as a “small” megadungeon and gradually evolved into a 30-map monstrosity.

That’s the full list of the maps involved and how they connect.

Here’s the maps in question:

• The Mushroom Cave | Wandering Monster Table
• Under the Mushroom Cave | Wandering Monster Table
• The Goblin Caves
• The Rat-Folk Tunnels
• The Cannibal Cave
• Lost River Cave (East)
• Lost River Cave (West)
• Lost River Cave (South)
• Under the Lost River Temple
• The Morlock Retreat
• The Ogre Base
• The Marble Hall
• The Hall of Bronze
• Dwarven Crypts
• Venomous Hall
• The Iron Halls
• Gates of the City
• The Mithril Hall
• The Hematite Mines
• The Thunder Mines
• The Flooded Mines
• Lost River
• Home of the Muck Dwellers
• The Water Temple
• Dwarven Outpost
• Giant Citadel – North
• Giant Citadel – South
• The Crypts
• The Death Cult
• The Necropolis of Bryn Mynnyd
• The Harpy Tower

They come together into something like this: