Arreat Summit

The Arreat Summit is the peak of Mount Arreat and the location of both the Ancients and the entrance to the Worldstone Keep, the final dungeon in Act 5. At the centre of the summit area is the Altar of the Heavens - when touched, it will awaken the guardians Talic, Madawc and Korlic, whose defeat is required to open the way to the Worldstone Keep.

The only other enemy to dwell in the Arreat Summit is Narthal, whose defeat opens the way (on Hell difficulty) to the Arreat Summit a few millennia ago, where the player is transformed into Diablo and reenacts his battle against Bul-Kathos and the Shadow Wolf Warriors.

Locations

Act I
Rogue Encampment (Town) Secret Cow Level (special) Corral of Corruption Bramwell Church of Dien-Ap-Sten Path to Enlightenment Subterranean Corridor Duncraig Corrupted Abbey Blood Moor Den of Evil Cold Plains Cave (2 levels) Burial Grounds Crypt Mausoleum	Stony Field Tristram Butcher's Lair Underground Passage (2 levels) Dark Wood Black Marsh Forgotten Tower (5 levels) Hole (2 levels) Tamoe Highland Pit Infernal Cave	Monastery Gate Outer Cloister Barracks Jail (3 levels) Inner Cloister Cathedral Catacombs (4 levels)

Act II
Lut Gholein (Town) Sewers (3 levels) Rocky Waste Stony Tomb (2 levels) Dry Hills Halls of the Dead (3 levels) Tran Athulua Island of Skartara Maggot Passage Maggot Depths Wretched Sands	Far Oasis Maggot Lair (3 levels) Lost City Ancient Tunnels Valley of Snakes Claw Viper Temple (2 levels)	Harem (2 levels) Storm Oasis Palace Cellar (3 levels) Arcane Sanctuary Canyon of the Magi Tal Rasha's Tomb (7 levels) Canyon of the Magi (past) Tal Rasha's Chamber

Act III
Kurast Docks (Town) Torajan Jungles Chamber of Blood Chamber of Offering Kurast 3000 BA Web of Deceit Torajan Cemetery Toraja Teganze Mbwiru Eikura Spider Forest Arachnid Lair Spider Cavern Great Marsh Flayer Jungle Swampy Pit Proving Grounds Vizjun Genesis Flayer Dungeon (3 levels)	Lower Kurast Caldeum (town) Dimensional Sanctum Rathma Square Bastion of the Triune Specter of Hatred Dream of Anguish Phantasm of Terror Figment of Pain Snare of Destruction Yshari Sanctum Vizjerei Temple Kingdom of Shadow World Nexus	Kurast Bazaar Disused Fane Ruined Temple Sewers (2 levels) Upper Kurast Forgotten Reliquary Forgotten Temple Kurast Causeway Disused Reliquary Ruined Fane Travincal Durance of Hate (3 levels)

Act IV
Pandemonium Fortress (town) Outer Steppes	Plains of Despair Diamond Gates Silver City (town) Library of Fate Chapel of Vanity The Void Silver Spire Crystal Arch Halls of Valor Pools of Wisdom Edyrem's Path Uldyssian's Tomb City of the Damned	River of Flame Chaos Sanctuary Realm of Lies Storm Pit Realm of Sin Heart of Sin Storm Cave

Act V
Harrogath (town) Bloody Foothills Frigid Highlands Abaddon Arreat Plateau Pit of Acheron Crystalline Passage Frozen River	Nihlathak's Temple Halls of Anguish Halls of Pain Halls of Vaught Glacial Trail Drifter Cavern Frozen Tundra Infernal Pit The Ancients' Way Icy Cellar	Arreat Summit Arreat Summit Scosglen Túr Dúlra (town) Worldstone Keep (3 levels) Throne of Destruction Worldstone Chamber Fauztinville Bremmtown Edge of Nothingness

Special
Dimensional Labyrinth Twisted Sanctum Heart of Darkness