The end of the world....
Every one knows that they must die one day. Likewise, the myths occupy themselves with how the world one day must end. In some cases, this is perceived as a final occurrence, while some myths concern an ending that opens for a new world.

In the Norse mythology we find the legend of Ragnarok, the terrible final battle between good and evil cosmic powers. These myths are unique in that our ancestors believed that their gods did not live forever but that their time in the cosmos was finite, a time where the end would bring their destruction and a new creation.

Jewish and Christian beliefs also operate with a final resolution between evil and good, when God and the Devil shall some to the Earth and erase all life (Doomsday/Harmageddon).
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The sun god's travels across the heavens (Egypt) * Yin & Yang (China)
The dreamtime (Australia) * The good and the bad twin (Persia)
The father who eats his children (Greece) * The end of the world