The most obvious hazard is electrical shock, where a current passes through part of the body.
Who had allowed such an obvious hazard to fester all this time, upwind of a major population center?
Standing water will also freeze in winter - an obvious but often forgotten hazard.
For years, schools have cracked down on such obvious hazards as guns, knives and cigarettes.
But when a pig visits a bacon plant, there are obvious hazards.
Bruises and burns were obvious hazards of having to work in an overheated environment.
Have a look back at your accident and ill-health records - these often help to identify the less obvious hazards.
It's about 60 feet high, spotted with moss, and such an obvious hazard that a 2-year-old would know to stay away.
A less obvious hazard of welding is exposure to harmful chemicals.
He was not so confused as to blunder into the obvious hazards of the wilderness.