Looking out over the crater of Gunung Rinjani Volcano, Indonesia. At meters tall, Gunung Rinjani is the second highest mountain in Indonesia. The climb to the top may not be easy but it’s worth it. Photo by Bas Schonenberg
In this amazing close-up by Olivier Grunewald, we see molten sulfur burning atop a solid sulfur deposit. The picture was taken at the sulfur mine located in the crater of the Kawah Ijen volcano in East Java, Indonesia.