I was struck by how this landscape of earth sea sky is purely on the gray scale. It was as if the spirit of Ansel Adams had conjured a perfect Zone System image. The full range of black and white tonality, that Adams wanted to get in an ideal balck and white image. Here it is in nature. I've seen grey sky and grey sea but never a black/gray beach. Volcanos have a great sense of style.
Letting the image drift a little out of focus then it seems sort of a Rothko image, spiritual blocks of tone, stacked atop each other.