Ashpit

Ashpit, is the plane of Oblivion that is associated with the Daedric Prince, Malacath. The Ashpit consists of nothing but dust, ash and smoke. There is no ground, sky or air. It is one of the hardest realms to reach, except the ones that are completely inaccessible to mortals and when it is reached levitation and magical breathing is an absolute necessity.

As described in 'The Doors of Oblivion' you can see from end of the world to the other in a million shades of grey. There are Palaces of Smoke, and certain vaporious creatures reside in the realm.

"...where anguish, betrayal, and broken promises like ash filled the bitter air."