A photograph accurately shows a U.S. "distress" flag hung upside down from the side of El Capitan in Yosemite National Park by a group of employees.

In a noticeable effort to grab attention, protesters put up an upside-down American flag on El Capitan at a time when visitors were gathered in droves.

A group of workers at California's Yosemite National Park positioned the U.S. flag on Saturday near the Horsetail Fall​ where crowds gather to witness Yosemite's annual firefall​.