Hadean



The Hadean was a the period when Earth had yet to solidify, as it was still composed of molten rock due to the heat that was so prevalent at the time.

This was long before life was believed to exist on that planet, as the Earth had yet to cool so as to allow the life to spring forth on that world.

It was believed that during this period the Crystaloid Monster fell from space to the Earth, plunging into its' magma, and sinking clear to the core.

External Link

 * Hadean at Wikipedia