Arsia Mons and its "clouds" (1) - 19 June 2001, Ls 180° (Extremely Saturated Natural Colors; credits NASA/JPL/MSSS)

Variazioni e ripetitività climatiche osservate sulla Regione dove sorge il grande vulcano Arsia Mons.

Original caption:"A wide angle view taken by the Mars Orbiter Camera on NASA's Mars Global Surveyor. At intervals of approximately one Mars year apart, similar spiral dust clouds over a volcano named Arsia Mons can be seen. This image was taken on June 19, 2001, such as the first day of Southern Winter on Mars".