- "The wall which stood for centuries along the southern border of Old Russia has collapsed, a battle-scorched reminder that our enemies still seek to destroy us all. Fallen mutants now scavenge the tombs of the Golden Age, and the plague they have unearthed in the wastes is more dangerous than even they understand. Join Lord Saladin. Journey into the Plaguelands. Learn the fate of the Iron Lords and stop the growing threat before it is too late."
- —Official Rise of Iron description
The Wall is an ancient defense barrier that stood for centuries the along the southern border of Old Russia, encircling a vast swathe of territory. It was built during the Golden Age to secure the Cosmodrome, and also contains what are now known as the Plaguelands. When the Devil Splicers breached the Wall at the onset of the SIVA Crisis, the last Iron Lord, Saladin Forge, personally led the counter-attack to reclaim the site before the Fallen unleashed SIVA, recruiting Guardians to rise as the next generation of Iron Lords.