This is the violent spring run off from the seasonal Mirror Lake in Yosemite National Park in California. We had to do a bit of scrambling along slippery rocks to get close to the icy water. Falling in would have been a problem due to the volume of water.
Mirror Lake has little water much of the year, but in spring and early summer it can grow in size. When water is calm, the lake offers beautiful reflections of surrounding cliffs. Exhibits detail the story of the area’s lake-to-meadow succession. This can be a good place to spot wildlife. See a previous post of this tranquil lake compared to its violent creek.