Man dives into active volcano crater, gets extremely close to its mouth, captures the whole experience on film, whilst also taking a selfie. The extreme expedition occurred a month ago as an explorer and documentarian named George Kourounis went with fellow explorer and filmmaker Sam Cossman to the Martum crater. The expedition where man dives into active volcano crater occurred in the island of Malampa Province in the archipelago of Vanuatu, in the South Pacific.