Fumaroles

thumb|Fumarole at Sol de Mañana, Bolivia

thumb|Mofetta with gas bubbles in Soos National Nature Reserve near Skalná, Czech Republic thumb|Mofettas on the southeastern shore of the Laacher See, near [[Andernach, Rhineland-Palatinate, Germany]] Mofetta (Italian from Latin mephītis, a pestilential exhalation) is a name applied to a volcanic discharge consisting chiefly of carbon dioxide, often associated with other vapours, representing the final phase of volcanic activity. The Oxford Dictionary of English lists mofetta as an archaic term for the modern word fumarole.

thumb|300px|right|View of Duvalo, near village Kosel

plateau on the planet Mars

product of deposition from vapors around volcanic vents