Yagolorn is a blasted landscape infused with the energy of Chaos. It is plagued with freak happenings, fissures opening up in the air or blowing up the surface. These release swirling choppy liquid like a rough sea, or a churning maelstrom of rock, or nearly any other conceivable element.
On a much smaller scale, Yagolorn gets storms like the Primordial Storm. For travelers, the most deadly anomaly to run across are columns of fire that dance across the wastes - these are in fact tornadoes of fire composed of elemental energy that need nothing to continue burning. The tornadoes, storms, and other happenings of the land typically disappear after several hours or even days. A few of these chaos infusions into this realm become permanent fixtures of this world. These things are unmoored motes composed of some element - like earth, water, fire, lighting, or some other element.
Creatures that stay too long in this land have a high chance of being chaos infused.
In the Year 60, Theegans built the Briltarn tower as part of an early warning system for terrors that may come out of the wastes. Early in the First Epoch, they suffered badly from chaotic abominations coming out of Yagolorn. For a time, they thought the gnolls were responsible for bringing them forth and sending them north to run amok in lands they coveted. After a while they learned that the gnolls had learned how to deal with these creatures by enticing them in a different direction through speed and guile. After a time, the Theegans learned to do the same tricks as the gnolls, with both parties agreeing to guide the beasts north into the lands of their most hated foe - the bloodthirsty jara of the Tribe Steppes.
Near the heart of Yagolorn is a petrified arm of immense size. Pinkish, like flayed flesh from a distance, this 200' long appendage has long hairs that are like iron wires. Some intrepid explorers have attempted to cut these hairs for possible sale to alchemists or wizards but neither weapon or magic has been able to sever them. This petrified arm is all that remains of Krerax, a mighty primordial warlord of the Creation War (1486 DE - 8777 DE). This arm is not the only thing left from the epic battle fought here so long ago. The other feature are three great sinkholes, themselves created with the abomination centipede Morebhox was severed in three. The acidic blood of this dying creature burned these holes in the earth, and earning their name the Cysts of Morebhox.
At the northwestern edge of this wasteland is the Theegan city Briltarn. This city's defenses and ruins are testament to the might of what can slither, crawl, and walk out of Yagolorn.