Continual Fire beneath Centralia, Pennsylvania

- Photo Credit: Don Emmert / Getty Images
Gates of Hell in Clifton, New Jersey

- Photo Credit: Owl's Flight / Flickr (CC)
Mount Osore, Japan

- Photo Credit: Japanexperterna.se / Flickr (CC)
Fengdu Ghost City in Chongqing Municipality, China

- Photo Credit: China Photos / Getty Images
Door to Hell in Durweze, Turkmenistan

- Photo Credit: Igor Sasin / Getty Images