2017 04/01
Italy Campania Pozzuoli Exif: NIKON D800, 24.0-70.0 mm f/2.8 @ f/8.0 10/1, ISO 100 121   
Jpg file

Close-up view of the fumarole Big mouth of the solfatara of Pozzuoli

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.

sulfatara fumarole big mouth pozzuoli
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Hash SHA1: c91293c08e1f2edda8b6626f6d8ff8a463b06a5e
Hash SHA256: 070308e197b097878e20c7113b76205b220ae23716b8f53e147861fb564aeffa