We Found Your Grandfather!

In here, there was no sun, moon or stars.

Only darkness.

However, claiming that there was no sky in here and that there was only a pitch-black ceiling would be a little incorrect.

If there had been a bird flying in a straight line upwards, it would never reach the 'ceiling' even if it flew ten thousand years and rose dozens of thousand miles above the ground.

Still, if one had to say it, the height within this space was not really significant even if it was endless.

And while there was no sun, moon or star in here, the space in here (the ground, specifically) was not actually dark.

That was thanks to the massive crystal formations that stood over the ground over several or even dozens of meters, each of which glowed dimly in milky-white or emerald radiance.