curved ahead warning sign on highway road

ahead arizona asphalt bend blue boulders canyon car careful caution character cliff cliffs curve curved curves curvy danger dangerous destination edge encironment extreme formation freeway geological gorge grand highway illustration information inspire inter landscape mount mountain mountainous mountains national nature note notice outdoors park possible rental risk road round safety scenic shild sign signage south state stone stones street symbol tourism tourist traffic travel travelers trip usa vehikel view warning watch winding yellow zone