© Istockphoto|Gansbaa, Sudafrica 

© Istockphoto| Skeleton Coast, Namibia 

© Istockphoto| Deserto della Dancalia, Etiopia 

© Istockphoto|Lago Natron, Tanzania 

© Istockphoto| Chi-no-ike Jigoku, Beppu, Giappone 

© Istockphoto| Valle della Morte, Kamchatka, Russia

© Istockphoto| Oymyakon, Russia 

© Istockphoto| Atollo di Bikini, Isole Marshall, Oceania

© Istockphoto| Fraser Island, Australia

© Istockphoto| Madidi National Park, Bolivia