Yosemite Falls Moonbow

Moonbows, also known as "lunar rainbows," are rainbows which form at night due to the light of the moon.  When the moon is full and shining at the correct angle on the spray of a large waterfall, a moonbow can be seen arcing through the mist.  John Muir wrote about their occurrence in Yosemite in the 1800s but only recently has their popularity increased due to advances in cameras and night photography.

Lower Yosemite Falls, May 14, 2022 ~9:15 PM

Rob Decker is a photographer and graphic artist who had the rare privilege of studying under Ansel Adams in Yosemite National Park when he was just 19 years old. Now, Rob is on a journey to explore and photograph all of America’s National Parks. He’s creating WPA-style posters to help people celebrate their own national park adventures — as well as encourage others to get out and explore!

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