When the natural conditions are just right, tourists can enjoy a unique spectacle where water turns into burning fire. During the last two weeks of February, when the sun shines above Yosemite Valley, and water pours down the granite wall, the firefall phenomenon takes place. But because clouds and storms are common during the winter months, and sometimes California has dry years, Horsetail Firefall can only be witnessed rarely, and timing is of the essence.
