Photo taken on Aug. 9, 2021 shows a rainbow above the skyline while Mount Sinabung spewing volcanic materials and smoke as seen from Gamber village in Karo, North Sumatra, Indonesia.(Photo: Xinhua)
Photo taken on Aug. 9, 2021 shows a rainbow above the skyline while Mount Sinabung spewing volcanic materials and smoke as seen from Gamber village in Karo, North Sumatra, Indonesia.(Photo: Xinhua)