Ali Sofyan, manager of the airport, said drifting ash from the eruption at Mount Sinabung posed a danger, The Jakarta Post reported.
"Today, Mount Sinabung spewed volcanic ash about 8,000 meters [8,800 yards] into the sky in a westerly direction. Therefore, any route heading west, such as toward Meulaboh and Sinabang, are closed," Soyfan said.
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