GINNUNGA-GAP The empty space that existed in the world before the creation of the world, according to Norse myth. On one side it was bordered by Niflheim, and on the other, Muspellheim. The warmth from Muspellheim caused the ice of Niflheim to melt and topple over into the Ginnunga-Gap, and from this ice rose Ymir, father of the Ice Giants, and first being in the Norse world.