Subterranean royal dwarven crypts and magma-flooded halls beneath Old Ironforge (Entrance at 27.6, 47.8). Invaded by Dark Iron forces led by Durgen Dirgehammer.
Blighted royal crypts and necromantic catacombs beneath the Capital City of Lordaeron (Undercity entrance at 72.4, 11.4), home to Witherfang, The Baron, The Abandoned, Rath'mael, Bjork, and Viktor the Vile.
Volcanic rift beneath Orgrimmar's Cleft of Shadow infiltrated by the Searing Blade cult.
Secret subterranean headquarters of the Defias Brotherhood beneath Moonbrook in Westfall, culminating in Ironclad Cove and Edwin VanCleef's juggernaut.
Labyrinthine underground caverns in The Barrens corrupted by the Fanglords and the Emerald Nightmare.
15v15 resource battleground in the Arathi Highlands fought between The League of Arathor and The Defilers.
Overrun Titan dig site and primordial marshland caverns in central Wetlands (Entrance at 47.8, 56.2), guarded by Saltspine, Shadetooth, Highland Horror, and the awakened Relic Guardian.
Haunted fortress overlooking Pyrewood Village in Silverpine Forest, ruled by Archmage Arugal and his Worgen pack.
Sunken Night Elf temple of Elune on the Zoram Strand in Ashenvale, occupied by the Twilight's Hammer and Aku'mai.
High-security prison complex beneath Stormwind City seized in a violent inmate uprising led by Bazil Thredd.
Spell-shattered streets, Violet Hold ruins, and ley-line sanctums beneath the arcane dome in Alterac Mountains (Entrance at 8.5, 59.2), featuring 9 encounters culminating in the Shade of the Archmage.
Four-winged bastion of the fanatical Scarlet Crusade in Tirisfal Glades: Graveyard, Library, Armory, and Cathedral.
Irradiated technological capital of the Gnomes in Dun Morogh, usurped by Mekgineer Thermaplugg and trogg invaders.
Thorny quilboar stronghold in the southern Barrens ruled by Charlga Razorflank and the Death's Head tribe.
Submerged ancient troll and naga temple ruins in WoW: Forever, ruled by Zul'Alai, Var'Taka, Deathless Marrow, and Min'loth the Serpent.
Scourge-infested bone spire in the southern Barrens ruled by the lich Amnennar the Coldbringer.
Ancient Titan subterranean vault in the Badlands holding the Discs of Norgannon and the stone watcher Archaedas.
Sun-scorched Sandfury troll city in northwestern Tanaris, home to Chief Ukorz Sandscalp and the hydra Gahz'rilla.
Sacred elemental caverns and waterfalls in Desolace guarded by Princess Theradras at Zaetar's Grave.
The Temple of Atal'Hakkar beneath the Pool of Tears in Swamp of Sorrows, guarded by Jammal'an the Prophet and the Shade of Eranikus.
40v40 snowbound mountain valley contested between the Stormpike Guard (Vanndar Stormpike) and the Frostwolf Clan (Drek'Thar).
Sprawling subterranean city of the Dark Iron Dwarves ruled by Emperor Dagran Thaurissan beneath Blackrock Mountain.
Upper and Lower Blackrock Spire fortress of the Dark Horde and Black Dragonflight, ruled by Overlord Wyrmthalak and General Drakkisath.
Ancient Highborne city of Eldre'Thalas in Feralas split into three wings: Warpwood Quarter (East), Capital Gardens (West), and Gordok Commons (North).
Pitch-black catacombs and Upside-Down Sinners beneath Karazhan in Deadwind Pass.
Necromantic academy of the Cult of the Damned beneath Caer Darrow in Western Plaguelands, led by Darkmaster Gandling and Ras Frostwhisper.
Burning northern city of Eastern Plaguelands divided between the Scarlet Bastion (Balnazzar) and the Scourge Slaughter Square (Baron Rivendare).
Rowdy level-60 WoW: Forever tavern instance featuring high-stakes arena brawls against Deathulus and Crushfist Bloodbreaker.
Sanctum of Nefarian (Lord Victor Nefarius) atop the highest peaks of Blackrock Spire.
Epic 20-player raid on the sacred slopes of Mount Hyjal in WoW: Forever, featuring 13 encounters from Bandalar and the Time-Lost Battalion to Nythus the Dreambound and The Wild King.
Fiery elemental heart of Blackrock Mountain where Ragnaros the Firelord and his ten lieutenants rule.
Dread necropolis floating above the Plaguewood in Eastern Plaguelands, seat of Archlich Kel'Thuzad and Sapphiron.
Volcanic brood-cavern in the Wyrmbog of Dustwallow Marsh, home to Onyxia, Broodmother of the Black Dragonflight.
Sun-bleached outdoor fortress of the Qiraji Empire in southern Silithus commanded by Ossirian the Unscarred.
Inner subterranean hive-temple of Ahn'Qiraj housing the Twin Emperors and the Old God C'Thun.
Subterranean druidic barrow sanctuary in WoW: Forever corrupted by the Emerald Nightmare. A 20-player raid featuring 8 bosses culminating in Sonya Darkhallow.
Ancient jungle capital of the Gurubashi Empire in Stranglethorn Vale where the Atal'ai Priests summon Hakkar the Soulflayer.