John Seach, Volcano Live

 Solfatara - John Seach

A solfatara is a vent which emits sulphorous gases.

SO2 and H2S

Compare with a fumarole which emits mainly steam.
The Solfatara Stage refers to a volcano which is between eruptions or no longer has a supply
of magma but still emits sulphorous gases.

Copyright John Seach