Ginnungagap
From the Voluspa section of the Norse-Icelandic Poetic Edda:

Of old was the age, when Ymir lived;
Sea nor cool waves, nor sand there were;
Earth had not been, nor heaven above,
But a yawning gap, and grass nowhere.

Ginnungagap is the abysmal gap of origin which forms the border between (ie, at once separates and joins) the northern ice and the southern fire. It is out of this gap through the action of the giants and gods that the world is born - middle earth (Miðgarð).

As with the Greeks, the mystery lies in the joint of what belongs below (ice, north, night, giants) with what belongs above (fire, south, day, gods). It is the nature of human being, the creatures of Miðgarð, to be subject to this mystery and to the care and anxiety which follow from its difficult complexity.

The Fall Through Ginnungagap
by Amon Amarth

Once I was - Now I am no more
A burst of flames threw me into oblivion
The life I knew - Seems distant and unreal
A fading dream, a memory I can't recall

Am I real - I can no longer tell
A notion tells me I still exist
Infinite dark - Through this void I float
Resting, waiting for the day

When I will live again
Eons pass or maybe I just blinked
Deeper into this hell I sink
Falling through Ginnungagap

I'm pulled towards an unseen gate
I seem to hear my name being called
I float towards these cries of fate
Faster than - the speed of light

I am falling through universe
Stars flash by - Before my eyes
The time has come to return
Out of the dark - Into the light

Back into life I am cast

By my side - A demon army rides
We ride to reclaim that once we lost
Eons have passed, I'm back from the dead
Victory lies ahead