Wetlands is a zone on the continent of Eastern Kingdoms which has an environment of Plains . Wetlands has quests for players leveled 20-30. The area is controlled by the Alliance and should be avoided by the Horde. Wetlands has 0 dungeons and raids resident in this zone.
The Wetlands is a marshland zone situated to the east of Dun Morogh, the starting zone for Dwarves and Gnomes. Given its close proximity to Dun Morogh, the most common players that you will experience here will be dwarves and gnomes in their twenties. There are no Horde encampments nor are there any neutral flightpoints so you're unlikely to see any Horde here.
Before Stormwind's harbour was built, the settlement Menethil Harbor used to be the only way to get from Eastern Kingdoms to Darkshore and then onto the Alliance cities or Darnassus and Azuremyst Isle. For low characters, it would be a route of death because everything in the zone would be able to kill you unless you had a protector.
Boats still run from Menethil Harbor but you longer need to do the run of death to get there. Menethil Harbor is now under a foot or so of water. In real-life, it'll be a horrible place to go having trudge through all the water but stil not the greatest place in the game.
Eastern Kingdoms are really two separate islands with a massive concrete indestructable bridge linking Wetlands to Arathi Highlands. On the northern part of the island are the two Horde capital cities, Undercity and Silvermoon. The Alliance cities are on the southern end.
Grim Batol, a large building carved into the mount and off limits for the earliest expansions was now open but you had to be a high character and it was accessible only from Twilight Highlands, a Cataclysm end zone.