![Permian rhyolite, Mongolian Altai](/show/photo/21705/g150.jpg)
Permian rhyolite, Mongolian Altai
© Hanl, Pavel | 2012
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![Mofettes, Stefanos crater, Nisyros, Aegean see](/show/photo/21706/g150.jpg)
Mofettes, Stefanos crater, Nisyros, Aegean see
© Hanl, Pavel | 2012
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![Durbachite, Drahonín](/show/photo/21693/g150.jpg)
Durbachite, Drahonín
© Hanl, Pavel | 2012
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![Rocky inscription, Mongolian Altai](/show/photo/21694/g150.jpg)
Rocky inscription, Mongolian Altai
© Hanl, Pavel | 2012
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![Granite tors, Mongolian Altai](/show/photo/21695/g150.jpg)
Granite tors, Mongolian Altai
© Hanl, Pavel | 2012
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![Red Jurassic sediments, Mongolian Altai.](/show/photo/21696/g150.jpg)
Red Jurassic sediments, Mongolian Altai.
© Hanl, Pavel | 2012
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![Stefanos crater, Nisyros, Aegean see](/show/photo/21697/g150.jpg)
Stefanos crater, Nisyros, Aegean see
© Hanl, Pavel | 2012
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![Slump folds, Mongolian Altai](/show/photo/21698/g150.jpg)
Slump folds, Mongolian Altai
© Hanl, Pavel | 2012
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![Siltstone dune, Mongolian Altai](/show/photo/21699/g150.jpg)
Siltstone dune, Mongolian Altai
© Hanl, Pavel | 2012
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![Black sands, Kos island, Aegean see](/show/photo/21700/g150.jpg)
Black sands, Kos island, Aegean see
© Hanl, Pavel | 2012
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![Spherulites in rhyolite, Kos island, Aegean see](/show/photo/21701/g150.jpg)
Spherulites in rhyolite, Kos island, Aegean see
© Hanl, Pavel | 2012
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![Solfatara, Stefanos crater, Nisyros, Aegean see](/show/photo/21702/g150.jpg)
Solfatara, Stefanos crater, Nisyros, Aegean see
© Hanl, Pavel | 2012
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