The Jakarta Post | May 11, 2018 | ~ 120 mountaineers rescued from Mount Merapi ~ | .. A sudden phreatic eruption took place at 7:32 a.m. on Friday, spewing volcanic ash as high as 5,500 meters. A phreatic eruption is caused by the heating and expansion of groundwater. They are also generally weak eruptions .. | Blogger: A True Sunshine Story ... 💖 |

A biker travels on the Boyolali-Magelang road in Central Java while Mount Merapi erupts in the background. A sudden phreatic eruption took place at 7:32 a.m. on Friday, spewing volcanic ash high as 5,500 meters. A phreatic eruption is caused by the heating and expansion of groundwater. They are also generally weak eruptions. (Antara/Aloysius Jarot Nugroho)

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