Blue hour before sunrise: lava red and sky blue. (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
One of the world's most famous volcanoes looming over the City of Naples
How to watch volcanoes? Which volcano to choose? Some guidelines.
Nyiragongo volcano photos
: Nyiragongo (DR Congo) has the world's largest and most active lava lake. Enjoy our pictures taken during several expeditions over the past years.