Kalimdor was primarily the domain of the night elves in the ten thousand years between the War of the Ancients and the Battle of Mount Hyjal. In the years since the battle, night elf dominion has given way as the tauren adopted a more centralized system and accepted their allies, the orcs and the trolls into their midst. The recent arrival of the draenei adds a new power to the map.
Prior to the Great Sundering in which the original Well of Eternity imploded, Kalimdor was the name of the world's singular landmass which later was split into the three main continents (known so far).
Kalimdor has a huge variety of both animal and plant life. Within this continent, you will find almost every land type; from the ice cold plains of Winterspring in the north, to the hot desert of Tanaris in the south. The mystical woods of Ashenvale, the dry, rocky Thousand Needles, the tropical, lush jungle of Feralas — this continent has it all. To the north the landscape is primarily coated in thick alpine woodland, typical in areas such as Ashenvale.