The seven Izu Islands are a group of volcanic islands in the Fuji Volcanic Belt that stretches from north to south for 280 miles. A reek of sulfur cannot be avoided or ignored because of the area’s volcanic nature. People who live there were actually evacuated in 2000 (and once in 1953) because the levels of gas were through the roof. They were allowed back in five years later. Residents of Miyakejima, one of Japan's Izu Islands, must wear masks all the time.