I think we have glowworms...

The tour in the glowworm cave was very short but an awesome experience. Taking photos and filming was not allowed, of course.

Actually, they are not glowworms but larvae.

Here are some links:
https://www.youtube.com/watch?v=JC41M7RPSec  https://www.youtube.com/watch?v=AlLKjKgV5So
360° video to explore by yourself https://www.youtube.com/watch?v=QjqGlLVIAtg

Learning of the day: If you get lost in a dark cave, make some noise and disguise yourself as "prey of the glowworms", then they will light up and show you the way.