An orange and grey tinged skyline hangs over northern California, as fast-moving wildfires continue to plague the Golden state. Another blaze erupted on Saturday, leaving four firefighters with second degree burns.<br /><br /> Thousands have fled their homes as flames threaten to engulf populated areas.<br /><br /> The cause is still being investigated.<br /><br /> One blaze named the Valley Fire broke out in Lake County, 160km north of San Francisco and enveloped tinder dry areas parched from years of drought.<br /><br /> The so-called Butte Fire, 112 kms southeast of Sacramento, has destroyed at least 86 homes and 51 outbuildings.<br /><br /> Flames from a larger Sierra Nevada blaze, dubbed the Rough Fire in central California, speeded north toward McKenzie Ridge, where firefighters continued to strengthen containment lines on Saturday.
