It doesn't really bear thinking about but the world is basically a boiling basketball of molten lava and we live precariously on the thin crust. Any little hairline fracture in our stomping ground and up spurts liquid fire.
But not everyone is as concerned by the fact that there's hellfire bubbling underfoot as nervous nellie ArchBlog is. Some dudes actually want to get closer to the red hot action.
These thrill-seekers meet up on the weekends, get into their (cool) cool suits and head straight for the flames. Here's recent footage shot by the South Pacific island of Ambrym branch of the Hellfire Kru.