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Le cascate del Niagara sono parzialmente ghiacciate a causa delle temperature polari che hanno raggiunto i -25°C. Si tratta di uno spettacolo unico al mondo, generato appunto dall'ondata di gelo che ha colpito il Midwest e la costa nordorientale degli Stati Uniti.
Ovviamente, turisti, fotografi, appassionati e semplici curiosi hanno sfruttato l'occasione per immortalare il fenomeno, postando poi le immagini sui social network o destinandole ai più tradizionali album di casa.
Le lastre di ghiaccio ed i cumuli di neve hanno rievocato a molti i paesaggi di "Frozen", il celebre capolavoro d'animazione della Disney. Vero è che ormai quasi ogni anno e più volte durante l'inverno le cascate al confine tra Canada e Stati Uniti si mostrano in questa veste davvero straordinaria.
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