Klatchistan
Not much is known about the place, but then, there's not much there. Klatchistan is basically an uninhabitle region covered with ferocious desert located on the continent of Klatch. In Mort, a "promising" war (in terms of number of fatal casualities) is fought there, but Mort opts for a more promising assassination. One wonders if the effect of Death being absent is what caused the great amount of interest the Gods had in the war (as mentioned by Anoia in Wintersmith).
It was one of a number of regions patrolled by 71-hour Ahmed, and where he ended up after the events of Jingo. After Prince Cadram's plans were ruined he fled here. Due to Ahmed's rough brand of justice, Cadram's lifespan is probably not going to be too long.
Klatchistan apparently produces Klatch's supply of pedigree hunting dogs.
Annotation
It is named similar to a number of nations on Roundworld, including Pakistan, Afghanistan, Turkmenistan, and Kazakhstan. Also, former Rhodesia (now Zimbabwe and Zambia) is known for it's breed of hunting dogs, the Rhodesian Ridgeback.