"Just after dinner we pass a stream on the right, which leaps into the Colorado by a direct fall of more than 100 feet, forming a beautiful cascade. On the rocks in the cave-like chamber are ferns, with delicate fronds and enameled stalks." - John Wesley Powell, August 23, 1869. Like a gift, booming streams of crystalline water emerge from mysterious caves to transform the harsh desert of the inner canyon into an absurdly beautiful green oasis replete with the music of water falling into...

Yosemite National Park: Horsetail Fall is a small, ephemeral waterfall that flows over the eastern edge of El Capitan in Yosemite Valley. For two weeks in February, the setting sun striking the waterfall creates a deep orange glow that resembles Yosemite's historic, "Firefall."

Yosemite National Park: Yosemite Falls is the tallest waterfall in North America, and is a powerful presence in Yosemite Valley. From winter ice to spring flood to autumn dryness, this magnificent waterfall is a dynamic force of nature.

Glacier National Park: Bird Woman Falls, the 492-foot drop across the valley between Mount Oberlin and Mount Cannon, is discussed.

Glacier National Park: The Weeping Wall along Going-to-the-Sun Road is discussed. The waterfalls have been known to douse passengers with their windows open as they drive past the Weeping Wall.

Yosemite National Park: From the Milky Way to the moon, the beauty of Yosemite is on display 24 hours per day. During the full moon of the spring and early summer, lunar rainbows, also known as moonbows, can be seen on many park waterfalls.