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A flower of an ornamental specimen of Lilium sp.. A photo like this, taken from the right ...
A plant belonging to the family of the Passifloraceae, a family originating from Tropical ...
Una classificazione di pietre a Gerusalemme, al mercato della città vecchia.
Un esempio di impacchettamento di sfere con questi melograni impiati su una bancarella, ad...
The various shapes of stalactites and stalagmites in a cave.
A fruit of pear (Pyrus communis) with seeds. By cutting along the "equator", we put in evi...
Reflection tricks in the waters of the river that goes through the Kakadu National Park, i...
The geometry of cultivated fields, seen from an aircraft, in Australia.
