Just in time for easter, I remembered of a (supposedly) very old baltic pagan cosmogonic myth, involving some sort of eternal serpent, guarding the cosmic egg that afterwards somehow cracked and the universe came into being.

I just like how these symbols work together. Maybe there's even ying/yang in this myth.
Egg is the symbol of life. The matter that life is made of. Potential energy, passive, essential, existence.
Serpent/snake is the symbol of vitality. It's movement, sometimes time (not much of a difference here), flowing, kinetic energy, it's not life, it's "living".
Makes sense combining the two, they're already inseparable.
Besides... Anyone notice a certain more contemporary symbolism?..

Saying that ancient cosmologies, cosmogonies & metaphysics are amazing is an understatement - people had some serious imagination back then.