The 3 Hells

The 3 Hells are a group of planes in the Lower Planes that are historically ruled by the Devils. These 3 planes are vast places with extremely diverse topography of varying hellish landscapes. Each plane has 6 kingdoms making up what is infamously known as the 666 of Hell . 
Time in the 3 Hells moves much faster than in the Material Plane. Legend has it that this was intended by the god Krul to further punish those sent there. The unintended consequences however ended up giving the devil's there much more time to prepare and strategize in their conquering of other planes in the The Devil's Conquest .

Type

Dimensional plane