Reports are indicating that three volcanoes in Indonesia have erupted at the same time and all have covered skies in a cloud of ash that is disrupting flights in several parts of the region. Mount Rinjani on Lombok Island near Bali, the Sinabung volcano on Sumatra Island and Mount Gamalama in the Moluccas chain of islands have all erupted within the last three days.

Excerpt From The Weather Channel
No one has been injured, but flights at two airports have been disrupted. Sultan Babullah airport in Ternate, the capital of North Maluku province, was closed Wednesday and Lombok’s international airport was closed for several hours on Tuesday. The three mountains are among about 130 active volcanoes in Indonesia. The archipelago of 250 million people is prone to earthquakes and volcanoes because it sits along the Pacific “Ring of Fire,” a string of faults that lines the Pacific Ocean.