It's evenly [covering] the entire surface of the temple," Hari Setyawan, a staff member at the Borobudur Conservation Association told tempo.co. The team is assessing the volcanic ash, with samples being analyzed at the conservation's laboratory. The eruption resulted in volcanic ash spewing at a height of 6,000 meters heading westward and could be heard from the Mt. Merapi observation post in Srumbung district, Magelang regency. The regency is also partially covered in ash following the eruption.
Source: The Nation Bangkok May 24, 2018 04:52 UTC