What happened to Mordor?

[Groin Redbeard]

The book was called Tales from the Shadows by Braden Burgess. I don't consider it to be reliable material that is approved of by Tolkien, but I thought that it might hold just a grain of truth.

Originally Posted by The Sixth Wizard

Nurn would be sort of gloomy even in the daytime, scattered with ramshackle huts and peopled by a broken race, who endlessly till the poor but boundless fields and farm the strange animals...

I pictured Nurn to be the most hospitable place in all of Mordor. Since Sauron's slaves farmed the area the soil would have to be rich and not thorny or rocky like the plains of Gorgoroth. After all, King Ellessar gave the lands to Sauron's slaves after the downfall of the dark tower so I'm sure there would have been sunlight and fruitful plains for people to make a living.