This picture shows 33 weeks of sunrises over the Mono Basin, east of Yosemite. It was made with a home-brew pinhole camera attached to a cottonwood tree at Dechambeau Ranch. You can see a bit of Mono lake just below the horizon. The exposure ran from September 24, 2014 to April 26 (Worldwide Pinhole Photography Day), 2015. There’s a gallery of other pinhole photographs taken around the world on that day here.
For the technically curious, the camera was made from a clean 1-quart paint can, duct tape, wood scraps, screws, a 0.7 mm pin hole in a thin sheet of aluminum, and a half-sheet of 8×10 Ilford Multigrade FB paper. Here’s what it looked like in situ on April 26: