At glyphs of this type Metoro mostly said something containing pú, a word meaning 'hole'.

But the word could also mean 'come forward', 'origin' etc. All these meanings are similar - out of holes living things emerge.

1. The rongorongo system of writing is using only the contours of the images. Here we have not only an outer perimeter but also two inner perimeters, i.e. two open holes. One of the holes presumably is there to allow entrance ('birth'), while the other is there for the exit ('death'). Between the 'door' leading in and the 'door' leading out lies the world of our senses.

"Their mothers have told them that the sky is a big bowl whose edge is fitted together with the horizon except at those places where the sun goes up and down. Through these two holes ships from another world can enter into our world." (Nordhoff & Hall)

The old Babylonians had the idea of a sky dome with two holes in it, one at the eastern horizon and one at the western horizon, to enable the sun to enter and leave. Sun did not spend the night down under the earth, but instead went above the sky dome, where it spread its light during the night. (Ref. Jensen)

"The heavens varying in number from three to twelve according to the locality were imagined as formed by widely spaced concentric hemispheres of solid material which rested upon the plane of the earth.

In a vertical direction upward the celestial realms would accordingly lie one above the other; but in the horizontal direction they formed circular zones on the earth's surface.

Thus a group of islands which considered itself te pito, the navel of the universe, was conceived of as situated at the center of a series of concentric spaces of great but indefinite extent, separated from one another by the walls of the various sky domes which rested on the earth." (Makemson)

If sun can enter and leave through holes, the other heavenly bodies presumably can do so too.