Kaguya's Dimensions

Kaguya's Dimension is an alternate space that seemingly only Kaguya Ōtsutsuki has access to through the use of the Dimensional Shifting technique. The dimension was first shown after Kaguya's resurrection. Wishing to not fight on the world that "nurtured" her, she transported both Team 7 and Obito Uchiha to the mysterious world and over a widespread river of lava. Kaguya can also teleport from one place to another within her dimension by creating portals.

Appearance
Kaguya's dimension is composed of at least three different environments.

The first area is a lava-filled wasteland. Most notably, there exists a large volcano that towers over the land. Atop the volcano there is a castle-like construction.

The second area is an icy realm, composed of frozen canyons and mountains. Another castle-like construction is situated atop an icy cliff.

The third area, where Sasuke was thrown into is a vast desert full of sand dunes.