Miners carry a goat head for burial as part of an annual offering ceremony at the Ijen volcano in Yogyakarta, Indonesia, Dec. 17, 2013.
The ritual is performed by the sulfur miners of Mount Ijen who slaughter a goat and then bury the head in the mountain's crater. The sacrifice is performed to ward off potential disasters for the next year.
The Ijen is one of the world's largest craters. Sulfur mining is a major industry in the region, made possible by an active vent at the edge of a lake, but the work is not without risks as the acidity of the water in the crater is high enough to dissolve clothing and cause breathing problems.