The void is a vast, crystal expansion. The crystal ground is indestructible. Growing from said crystal, sharp protrusions known as Void crystals are present. There's floating islands of reflective void crystals, and there's vast canyons or caves. Some of the caves are either ridiculously jagged, or unbelievably smooth, with slight roughness in the curves. If used right, void crystals can do whatever the user wants. The Voidheart can be found at the deepest cave.