Serpent's Skull in Eberron
Now known as The Mournland, Cyre was once the most advanced and cultured country in the original Five Nations that ruled over the continent of Khorvaire under the rulership of King Jalot. During The Last War, Cyre was beset by its enemies when a cataclysm erupted within its borders. The land was laid waste, cities crumbled and disappeared, all living creatures were smothered by rolling grey clouds, the land changed shapes and a large chasm opened in the ground to the north glowing with an eerie purple light, magic was twisted into unrecognizable shapes and some spells even came to life. Now, The Mournland is a sea of grey fog where few that enter its borders come out the same, if at all. Twisted creatures stumble out to ravish the countryside. Only a few thousand of Cyrans on the borders and in other countries at the time of the Day Of Mourning still survive.