A Tenggerese shaman praying for worshippers at Widodaren cave during the Tenggerese Hindu Yadnya Kasada festival on July 31, 2015 in Probolinggo, East Java, Indonesia. The festival is the main festival of the Tenggerese people and lasts about a month. On the fourteenth day, the Tenggerese make the journey to Mount Bromo to make offerings of rice, fruits, vegetables, flowers and livestock to the mountain gods by throwing them into the volcano's caldera. The origin of the festival lies in the 15th century when a princess named Roro Anteng started the principality of Tengger with her husband Joko Seger, and the childless couple asked the mountain Gods for help in bearing children. The legend says the Gods granted them 24 children but on the provision that the 25th must be tossed into the volcano in sacrifice. The 25th child, Kesuma, was finally sacrificed in this way after initial refusal, and the tradition of throwing sacrifices into the caldera to appease the mountain Gods continues today. (Photo by Ulet Ifansasti/Getty Images)

Mount Raung (top) spews ash into the air, as seen from Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

People take pictures of Bromo Tengger Semeru National Park during sunrise on top of Mount Pananjakan, ahead of Kasada festival in Indonesia's East Java province, July 31, 2015. The Kasada festival will be held on August 1, when the worshippers throw offerings such as livestock and other crops into the volcanic crater of Mount Bromo to give thanks to the Hindu gods for ensuring their safety and prosperity. (Photo by Reuters/Beawiharta)

Hindu villagers collect holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers climb a mountain to collect holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A general view of the Bromo Tengger Semeru National Park during sunrise is seen from top of Mount Pananjakan ahead of Kasada festival in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers collect holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu women villagers walks to the temple ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A Hindu father and his daughter drink holy water they collected from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers pray inside a cave during the collection of holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers collect holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A Hindu villager walks down the mountain while holding a bottle of holy water for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A Hindu villager holds his goat for offering as holy water is collected from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers carry their offering as they walk to collect holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A father holds up his son as they wash their face with holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Hindu villagers eat their breakfast after collecting holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A Hindu villager collects holy water from a stream for prayers ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

Mount Raung (top), in East Java, is seen spewing ash into the air from Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A Hindu villager puts an offering at an altar ahead of the annual Kasada festival at Mount Bromo in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

A general view of the Bromo Tengger Semeru National Park during sunrise is seen from top of Mount Pananjakan ahead of Kasada festival in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)

People take pictures of Bromo Tengger Semeru National Park during sunrise on top of Mount Pananjakan, ahead of Kasada festival in Indonesia's East Java province, July 31, 2015. (Photo by Reuters/Beawiharta)