Ysgard

From Manuel of the Planes (3e):

It is a place of heroes and glories.

It is where wars rage and valor is proved.

It is the battleground of eternity.

Ysgard is a plane on an epic scale, with soaring mountains, deep fjords, and dark caverns that hide the secret forges of the dwarves. A biting wind always blows at a hero's back. From the freezing water channels to the sacred groves of Alfheim's elves, Ysgard's terrain is both grand and terrible. It is a place of sharp seasons: Winter is a time of darkness and killing cold, and a summer day is scorching and clear.

Most spectacular of all, the landscape floats atop immense rivers of earth flowing forever through an endless skyscape. The broadest earthen rivers are the size of continents, while smaller sections, called earthbergs, are sland-sized. Fire rages under each river, but only a reddish glow penetrates to the continent's top. Of more concern is the occasional collision between rivers, which produces terrible quakes and sometimes spawns new mountain ranges.

Ysgard is the home of slain heroes who wage eternal battle on fields of glory. When these petitioners fall, they rise again the next morning to continue eternal warfare.

Two deities make their homes on Ysgard: Kord, scion of Strength; and Olidammara, patron of thieves.

The plane boasts two layers, Muspelheim and Nidavellir, beneath the main expanse of Ysgard.

The top layer of Ysgard, also called Ysgard, is far and away the most well known and well traveled of the three layers. Most of the inhabitants live in camps and rugged settlements with rough and wild conditions. The layer is dotted with dozens of huge halls, smoking battlefields, and hilly terrain leading down to cold seas. Few settlements exist along the edges of any of the earthbergs, except those interested in trade with communities on other earthbergs.