Athlete athletics begin beginning blue compete competition five four lanes line race run sky start straight track win winner boulder cloud colorado danger debris landscape mountain natural nature precarious rock rocky rugged scree summit top unstable usa countryside England english farm February field Great Britain green meadow peace rural Sussex tree alert awareness birds black blue sky bright protection road crossing sign warning water birds water fowl wildlife yellow age ancient clouds decay eu falling front house houses old out pavement porto Portugal urban worn worn-out autumn bokeh brown close-up colorful golden leaf leaves macro maple Poland rust stains sun texture wallpaper big brooding cumulus huge omen ominous threatening view