traffic alerts downhill slope, mojave desert usa

adventure alertness arizona attention background billboard canyon care careful caution cliff close concentration concept copy country countryside danger dangerous desert down downhill drive driving effect exhilaration exploration extreme gear gorge grand hazard high hill horizontal icon informationssign limit mojave mountain moving nature nobody overcast pass peak photography placard place point ravine retangle risk road rocks rural safety sandstone security shield sign signpost space speed steep terrain texture top tourism trail trip truck uphill usa vacations viewpoint warning watch wilderness yellow