Galungan is a Hindu spiritual celebration. It marks the time when the ancestral spirits visit the Earth. The last day of the celebration is Kuningan, and was also celebrated at Bromo, despite the ongoing eruption. See photos from my visit here
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Bromo volcano, May 2017.
See photos from visit here. As usual includes many aerial photos of the volcano.2nd trip in April 2022 to Merapi volcano in Central Java
See photos here