From WoWWiki

Alcaz Island is a large island off the northeast coast of Dustwallow Marsh. Unlike the rest of the zone, it features tropical vegetation similar to the nearby Echo Isles. It is inhabited mostly by nagas, and hydras can be found in the water around the island.

Once a human settlement, naga have taken over Alcaz Island and seem to be protecting something. Rumors abound, but so far no one has uncovered what the naga may be hiding. Alcaz was a small human village with an underground tunnel system, and presumably the tunnel system might be where the naga are hiding whatever it is they are guarding. Hydras also dwell off the coast; these may be native to the area, or the naga may have summoned them.^{LoM 37, 38}

While it is only a short swim from the coast, it can be rather dangerous since the monsters on and around the island are level 57-62 elite.

Under the surface of the island is a heavily guarded prison, where the missing king of Stormwind, Varian Wrynn was kept after his abduction by the Defias.

During the events surrounding the opening of the Gates of Ahn'Qiraj (in Patch 1.9), several changes occured. A malicious gnome, Doctor Weavil arrived on the island with his flying machine, and now resides in the largest house of the island, guarded by several of his minions. At the same time, King Varian Wrynn disappeared from his prison cell. It is unknown whether he was moved to a different prison or used the tumult caused by Dr. Weavil to escape. His current location remains a mystery, leading to many speculations. His former cell is now home to a naga called Tidelord Rrurgaz.

See also

• The Missing Diplomat quest chain
• The Scepter of the Shifting Sands quest chain

Trivia

Alcaz island is probably named after  Alcatraz Island in San Francisco Bay, California. There is another prison in the game with a similar name related to Alcatraz Island, the Arcatraz in Tempest Keep. Alcaz Island once belonged to Stormwind.

Subzones of Dustwallow Marsh

Alcaz Island • Beezil's Wreck • Blackhoof Village • Bloodfen Burrow • Bluefen • Brackenwall Village • Darkmist Cavern • The Den of Flame • Direhorn Post • The Dragonmurk • Dreadmurk Shore • Dustwallow Bay • Emberstrife's Den • Foothold Citadel • The Great Sea • Lost Point • Mudsprocket • Nat's Landing • North Point Tower • The Quagmire • Sentry Point • Shady Rest Inn • Stonemaul Ruins • Swamplight Manor • Tabetha's Farm • Theramore Isle • Tidefury Cove • Witch Hill • Wyrmbog