Alternate Dimensions

This refers to all the dimensions and planes that are not part of the multiverse proper, such as the Elemental Plane (Deepholm, The Abyssal Maw, The Firelands and Skywall) or realms where certain species of demon originate from.

However, travel between universes is conducted via the Twisting Nether as it acts as an arterial duct between parallel universes as well as cosms.