A fire allegedly started by two teenagers shrouded parts of Los Angeles in thick black smoke, threatening Hollywood film studios and the iconic hillside sign.
Nobody is believed to have been hurt by the blaze, which sent a giant plume of smoke into the sky. (Picture sent by reader David Freid)
Onlookers watched helplessly as the blaze spread over an area of 150 acres.
Some took to rooftops to get a better look at the dramatic spectacle.
It took firefighters several hours to put out the flames from the ground and from the air.
A firefighting helicopter dumped water on the blaze, which took hold after an exceptionally dry winter left the land parched.