Grimmjow will give up memories of Di Roy to open a Sub-Archway to Hueco Mundo in Everglade. Specifcally the area with Las Noches.

Las Noches, Hueco Mundo: Is the world where Hollows live. It is located between the Human World and Soul Society. It is always night time there and its landscape is an seemingly endless desert. Las Noches in a massive fortress inside of this desert and it can be seen for miles. Inside of the dome around the forest, a night sky is simulated, giving the sky an apperance more like the human world.