The Deadlands is a large set of islands to the southeast of the Mainland, which is mostly a barren landscape.
The Deadlands houses two cities, the Head and New Moon's Rise, nearer its northern reaches. But, to the south, the three Black Dragon Kings rule over the ash.
Life in the Deadlands can be difficult, as most things are out to kill you, and there's little in the way of shelter from the extremely cold nights, and blistering days.
It wasn't always like that, however. Back, when the Realm was first crafted, it was a beautiful, lush landscape. However, born from a disagreement on the Realm's direction, Skril' Astriloth caused a massive shockwave that tore the beautiful landscape to shreds, leaving it ashy and barren, and causing multiple volcano eruptions, before he was finally banished.