Menos Forest

The forest of quartz trees beneath Hueco Mundo's sands, where the Gillian, the most common Menos Grande, live, and where Adjuchas devour one another to evolve.

It is the deepest, darkest layer of Hueco Mundo, a place of pure survival: this is where a Hollow becomes an Adjuchas and, if it manages not to lose itself, a Vasto Lorde. The anime sets an original episode here with Rukia and Renji and the Soul Reaper Ashido Kanō, trapped here for years.