Such clouds are called nacreous clouds and their beauty is indescribable! According to wikipedia such clouds form in the winter polar stratosphere at 50,000–80,000 ft at very low temperatures and are very rare. Because there clouds are so high they receive sunlight from below the horizon and reflect it before dawn or after dusk.







via Livejournal.com & Mbnews.ru























3 comments
3 comments





























wow, these are beautiful! I had no idea that clouds can be like that