The Solfatara - The Bocca Grande(Large Mouth)

The Bocca Grande <<

The Bocca Grande ( The large mouth )

The Bocca Grande is the largest fumarola (volcanic vent) in the Solfatara. In the past, the German scientist Friedlander had an observatory situated here. Today it is the site of a volcanic research station for the Vesuvian Observatory and other scientific bodies. (see The ARGO Project.)

The sulfurous vapors make an audible hissing sound as they rise up from thousands of small volcanic vents called "fumarola". The largest of which, known as "The Bocca Grande" (The Large Mouth), is a spectacular sight. The sound that The Bocca Grande produces is similar to a burning flare... only much louder.

Rare red arsenic sulfur crystals called realgar can be found here.

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