It's all movies for me. And besides, when you say documentaries, in my case, in most of these cases, means "feature film" in disguise.

Of course I do things in my voice in my commentary, which I wrote.

When we speak about trespassing, we speak about artistic trespassing. You have to be prudent and have common sense and a sense of responsibility when you're trespassing. I think you haven't seen a film on volcanoes like that before. It's not National Geographic. It is wildly imaginative and very poetic and has a sense of awe that you normally do not see in films.

We have volcanoes also in our immediate neighborhood. I wish we didn't have to travel that far. Probably the kind of magnitude and awesome raw power of them is very fascinating, and of course it's very cinematic.

Film is not the art of scholars, but of illiterates.

I run my own film school, the Rogue Film School, and I do it over three and a half days, eight hours non-stop everyday; alone, single-handedly. But the difference is in the Rogue Film School I do have real human beings in front of me from all over the world, and of course there's this course as well, they can ask, talk about their problems and obstacles, finances, anything, you just name it. Whereas in the Masterclass, you are speaking to cameras.

The paintings are not just on flat walls - you have these enormous niches, bulges and protrusions, as well as stalactites and stalagmites. The effect of the three-dimensionality is phenomenal. It's a real drama which the artists of the time understood, and they used it for the drama of their paintings.