Like looking into the bowels of hell.
If anyone tries to tell you that nature is benevolent, invite them to view this short video by Jon Gustafsson.
“All of this was shot handheld on a Canon 6D through a small sliding window,” says Jon. “The key is to work with a great pilot but I would also love to try this with a 4K camera and stabilizing equipment.”
Thanks to H.D. Mellema for this video