Some creature or creatures regularly (sunrise and sunset, summer and winter, lunar phases) or irregularly (solar and lunar eclipses, eschatological events) attack the luminaries or shade their light
In the beginning of time a bird flies, lays an egg or eggs, different objects and creatures emerge from them or a bird drops some solid substance on the waters and the dry land or an island appear
In the beginning of time, a bird flies and drops some solid substance on the waters and the dry land or an island appear. Sometimes the precise nature of the substratum on which the solid piece falls is not defined
The couple of close relations originates the mankind
In the beginning of time or after the natural disaster brother and sister, mother and son, or father and daughters are the only human beings. They marry and the present day people are their descendents
One of the trees is the principal, original one (emerged before all the other; ancestor of wild or cultivated plants; ocean or rivers inside it; world axis; higher than all the others; overshadows sky)
Person gets into the belly of water being or into the belly of giant creature which appearance and living place remain vague. He kills the monster from the inside and/or returns to earth by himself (i.e. not extracted by other people)