I would have thought that it was something similar like Jack and the giant slayer :) It looks like a huge plant and that tiny person is using the hand to see the top better.. but then I saw two horns and understood that this was not the case.

It's a great illustration. The colors and shadows give it a magical flair. I also enjoy reading about how you made this illustration. It's nice to see how you work with the software :)

Thank you for sharing!