Sirestir

Sirestir, called 'Mother's Bosom' by the Elves and 'Circle Prison' by the Tieflings, is a planet and one of the three components of the Prime Material Plane, alongside the Feywild and the Cold Dark.

Most of Sirestir enjoys a temperate climate, with the exception of the region around the Tortoise Mountains to the west, and the Jang Desert to the east.

Sirestir is the most diverse of any of the parts of the Prime Material Plane and, indeed, is more varied than almost all of the Elemental Houses and Sixteen Seperate Dwellings. The main races of Sirestir are as follows: There are, of course, many other races within Sirestir, which can be found listed in the Races of the World section.
 * Humans, who hail from the large peninsula that lies almost in the center of the world.
 * Dwarves, who hail from the Tortoise Mountains and the surrounding areas.
 * Elves, who hail from the southern forest of Cantrer Gwaelod.
 * Tieflings, who claim that they hail from the House of Fire, and are kept on Sirestir as some kind of punishment by an unknown force.
 * True Halflings, who hail from the Jang desert. ('True Halfling' is used to denote those who belong to the race of very short, almost gnome-like people. Halfling can also be used to refer to those who are of mixed ancestry but are not common enough to form any kind of "racial culture", i.e. half-elves and half-ogres.)
 * Gnomes, who hail from the smaller peninsula in the north west of the planet.
 * Dragonborn, who hail from the frozen northern kingdoms.
 * Half-Orcs, who hail from nowhere in particular.
 * Orcs, who hail from the chain of islands north of the human lands.