The purpose is to bring an experimental mixture of soundscapes trying to evoke for the listener a sense of bewilderment, fear and astonishment, just like a monkey could feel travelling through space. Basically it's an attempt to explore how human curiosity and arrogance can generate forms of evil that are against the nature of things, using innocent living forms as oblivious witnesses of the utopistic reach of a knowledge that is far beyond the present step in evolution.
Oh and there's some random improvisation as well.
"Beware the beast Man, for he is the Devil's pawn. Alone among God's primates, he kills for sport or lust or greed. Yea, he will murder his brother to possess his brother's land. Let him not breed in great numbers, for he will make a desert of his home and yours. Shun him; drive him back into his jungle lair, for he is the harbinger of death." Planet Of The Apes - 1968.