Interesting haiku. There's certainly a lot in this, so many different ways it can be read, and while I'm seeing images, I'm not even sure what I should be seeing, and I kinda like that. Nice work. Keep writing! :)

Perhaps you speak of the mind. Surely our thoughts and dreams are gleaming tendrils. :)

The idea of a self-made cavern makes me invision an internal cave. As if, the person mentioning it were becoming introverted, and withdrawing further and further into themselves. Keep up the good work.

Much love,

Juliet.