: v. r4 Q, v( [, {7 `火瀑布是特定角度的陽光照射在瀑布上形成的光學效果。這一景觀只在每年2月末的兩個星期內有一定幾率可以看見。有些拍攝火瀑布的攝影師常常需要花費幾年時間才能拍到火瀑布的照片。之所以這麼難以看到這種景象，關鍵在於火瀑布的出現需要滿足幾個條件。 r% C! r/ G) r1 J. {首先是瀑布的形成。這個瀑布是依靠酋長岩上的雪山融水為源的，所以並非一年四季都存在。酋長岩上的雪一般在每年的十二月和一月融化。到二月底的時候，這個瀑布很可能已經水乾瀑亡了。 公仔箱論壇, l( G3 _9 H. R: S4 \/ i
Very well captured, more impressive than the Niagara Fall.1 T6 @% P7 m/ _. B7 `( t* M# M
Thank you Henrysuncpu.作者: SweetLemon 時間: 2010-6-1 04:43 PM
Natural phenomena are always best appreciated when rare. What's REALLY going to make people jealous is witnessing the Firefalls of Yosemite Park., U8 ~" X: U- e$ ?' e$ c
The Firefalls of Yosemite Park are a natural phenomenon that occurs during a two week period every year. Set in the Yosemite Valley, itself part of the Sierra Nevada mountain chain in California, this has to be one of the most beautiful and fiendishly rare natural sights in the world. As the sun sets on the Yosemite Valley, the Horsetail Waterfalls of El Capitan are illuminated from behind by the red glow of the light rays, turning them into a huge and spectacular optical illusion – as if fire were raining down from the top of the cliffs。 6 u7 O0 [4 _; k2 [4 n0 a1 u7 Ttvb now,tvbnow,bttvb- a# j$ a' e( K+ ], @8 F Horsetail Falls 3 e! R b$ F+ ?7 K6 k+ J公仔箱論壇公仔箱論壇, ?+ K9 X4 m2 y1 n/ J6 D) ^, f, P
As the phenomenon only occurs in February, bad weather conditions and abnormal water flow can prevent it from happening fairly easily, which is exactly what makes it such a rare event. The spectacle can last from a quarter of an hour to 30 minutes and according to witnesses grows in intensity throughout until finished.
