At the location is a puzzle box. For the hard of thinking however, I'll give some clear instructions, as it appears thats some folk just turn up at a cache without any prior preparation. (Such as reading the cache description or taking account of the cache attributes or looking at the difficulty rating). So this might be a waste of time, but let's do it anyway
Find the cache and using BARE HANDS ONLY, open it to reveal your prize.
The cache does not need to be prized, forced, jemmied or otherwise maltreated to open it. No kicking, throwing, dropping from a great height, lobbing sharp or heavy objects at it or using any sort of implement to open.
Arson is a criminal offence. Naked flames are not allowed in these woods (except at designated BBQs). Offenders will be placed in stocks, have rotten eggs thrown at them, and will be tickled until they squeal like a pig.
Shouting and swearing at the box will NOT open it. Shouting, swearing and name-calling the cache creator will not open the box either.
However, bribing the creator with maltesers may work and all bribes will be gratefully accepted and eaten with great pleasure . . . . . .