The legends of many cultures see the rainbow as a kind of bridge between heaven and earth. One of the most beautiful sights in nature, the rainbow has become in western culture a symbol of renewed hope; something lucky to look upon.
“A dirty thunderstorm (also, Volcanic lightning) is a weather phenomenon that occurs when lightning is produced in a volcanic plume. Dirty thunderstorms have been reported in Chile above the Chaiten Volcano, above Alaska's Mount Augustine vol.
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.