ItalyCampaniaPozzuoliExif: NIKON D800, 24.0-70.0 mm f/2.8 @ f/8.0 10/1, ISO 10040
Close view of the Fumarola
The reddish-yellow color is given by the vapors containing salts such as realgar, cinnabar and orpiment which, by settling, alter the color of the soil.