© Istockphoto|Great Blue Hole, Belize
© Istockphoto| Chuquicamata, Cile
© Istockphoto| Cenote Ik Kil, Messico
© Istockphoto| Burning Gates, Turkmenistan
© Istockphoto| Pozzo di Chand Baori, India
© Istockphoto|L’Occhio della Terra, Croazia
© Istockphoto|Bingham Canyon, Utah, Stati Uniti
© Istockphoto|Thor's Well, Oregon, Usa
© Istockphoto| Dean’s Blue Hole, Bahamas
© Istockphoto| Cratere di Excelsior Geyser, Yellowstone, USA
© Istockphoto|Great Blue Hole, Belize
© Istockphoto| Chuquicamata, Cile
© Istockphoto| Cenote Ik Kil, Messico
© Istockphoto| Burning Gates, Turkmenistan
© Istockphoto| Pozzo di Chand Baori, India
© Istockphoto|L’Occhio della Terra, Croazia
© Istockphoto|Bingham Canyon, Utah, Stati Uniti
© Istockphoto|Thor's Well, Oregon, Usa
© Istockphoto| Dean’s Blue Hole, Bahamas
© Istockphoto| Cratere di Excelsior Geyser, Yellowstone, USA
Cavità, doline e altre meraviglie: buchi in terra e in mare
Meraviglie della natura, ma anche opere dell’uomo che, nella loro bizzarria, sono un vero spettacolo