Horsetail Fall is located over the eastern ridge of El Capitan, a vertical rock formation on the western side of the national park. According to the National Park Service, the phenomenon happens ...

Photos taken by a former employee show an American flag hung upside down on the park's infamous El Capitan, a 3,000-foot wall of sheer granite and possibly the world's most fabled rock face.

may also be invisible to visitors and members of the public – we are shining a spotlight on them by putting a distress flag on El Capitan in view of Firefall. Think of it as your public lands on ...