The void between two worlds.
In Norse Myth, Ginnungagap, meaning the "great gap" or "yawning void" is the vast, primordial void that existed prior to the creation of the manifest universe.
Description[]
It is the unfathomable gap between Niflheim (the region of eternal cold, mist, and darkness) and Muspelheim (the realm of fire)—the void before creation. Cold winds from the abyss changed the streams into blocks of ice, which fell into the void with the sound of thunder, as the legends say. Sparks from Muspelheim turned the ice into streams, forming layers of frost that filled the gap.
Overview[]
A great time before the earth was made, Niflheim existed. Inside Niflheim was a well called Hvergelmer, from this well flowed numerous streams known as the Élivágar. Their names were Svol, Gunnthro, Form, Finbul, Thul, Slid and Hrid, Sylg and Ylg, Vid, Leipt and Gjoll. After a time these streams had traveled far from their source at Niflheim. So far that the venom that flowed within them hardened and turned to ice, and when this ice eventually settled, rain rose up from it, and froze into rime.
The inchoate mass became animate, taking the form of the primeval giant Ymir. Ymir was slain by Odin, Vili and Vé, who threw his body into the chasm, where his blood became the sea, his flesh the earth, his bones the mountains and rocks, his skull the sky, and his brains the clouds.
Despite it being a void of nothingness, it is allegedly stated that Surtr and Ymir were born out of Ginnungagap when the sparks of creation fell into the chaotic seas taking form heat and cold that would encompass the universe and its contents. The heat and cold would manifest as Surtr and Ymir respectively.