The world of Azeroth is comprised of four major continents, with a number of smaller islands scattered about them. Northrend is located in the north, Kalimdor in the west, the Eastern Kingdoms (aka eastern continents)[1] in the east, and Pandaria in the south. The Eastern Kingdoms are made up out of two large landmasses - the southern one includes Azeroth and Khaz Modan,[2] and the northern land of Lordaeron.[3] At one time, all of the three major continents (excepting Pandaria) were part of one large continent (known as Kalimdor), with a large magic lake known as the Well of Eternity in the center. When the well exploded at the conclusion of the War of the Ancients, this continent was shattered, leaving behind the continents and islands that exist today. The Forbidding Sea is the expanse of water to the east of the Eastern Kingdoms and the Veiled Sea sits west of Kalimdor. Between the continents lies the Great Sea, while at its center lies the Maelstrom — a massive chaotic whirlpool over the area where the Well of Eternity once stood. It's believed that a part of the Well still exists in the Rift at the bottom of the vortex. It has been active since the Great Sundering ten thousand years ago and still there is no foreseeable natural end to its existence.
The Eastern Kingdoms are made up of several continents including the southern continents (Azeroth and Khaz Modan),[2] and the northern continent of Lordaeron.[3]
The world of Azeroth also may have land located at the other side, beyond the Veiled Sea to the west of Kalimdor, and beyond the Forbidding Sea to the east of the Eastern Kingdoms. No one is sure or has knowledge of what kind of creatures, lands, cultures, life, and sentient being lives in the other side of Azeroth. It is clear, though, that it is very dangerous.
"A handful of ships have ventured from Kalimdor away from the Maelstrom — to the north, west, and south. None have yet returned."[4]