This article is about a particular volcano named 'Solfatara'; for the phenomenon of solfatare in general, see the common name
Solfatara is a shallow volcanic crater at Pozzuoli, near Naples, part of the Campi Flegrei volcanic area. It is a dormant volcano, which still emits jets of steam with sulfurous fumes. The name comes from the Latin, Sulpha terra, "land of sulfur", or "sulfur earth". It was formed around 4000 years ago and last erupted in 1198 with what was probably a - an explosive steam-driven eruption caused when phreatic eruption groundwater interacts with magma. The crater floor is a popular tourist attraction, as it has many fumaroles and mud pools. The area is well known for its bradyseism. The vapours have been used for medical purposes since Roman times.
This volcano is where the
thermoacidophilic archaeon was first isolated. The archaeon is named for the volcano, as most species of the genus Sulfolobus solfataricus Sulfolobus are named for the area where they are first isolated.
In 305, this is the location where the
patron of Pozzuoli, Saint Proculus, and the patron of Naples, Saint Januarius were beheaded.
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