![This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)](http://www.ecns.cn/hd/2018/07/10/185a243846064009b69619ae57edd158.jpg)
This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)
![This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)](http://www.ecns.cn/hd/2018/07/10/4ab28b04e6924a91abc974a1b9907a84.jpg)
This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)
![This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)](http://www.ecns.cn/hd/2018/07/10/31ca99ee676a4207b1d8912128a4bffa.jpg)
This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)
![This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)](http://www.ecns.cn/hd/2018/07/10/230a6bce6c614231845051e4a97aaf75.jpg)
This stunning photograph of Kawah Ijen volcano in Indonesia shows blue lava illuminating the night sky. But the blue glow from the volcano is not the lava itself, but a high quantity of sulphuric gas. The spectacular shots were taken by travel planner Donny Nugraha Pratama. (Photo/IC)