It is important to understand that the fire danger is not restricted to heavy bush areas. Grass fires can be just as dangerous. Grassfires don't generate the same heat as a bushfire, but they can travel much faster, particularly in hilly and mountainous areas. The grass does not need to be long either - just dry.
The cache you are looking for is a systema container with a few swaps and a pewter key tag for the First to Find. Look for a fairly obvious hiding place for a cache that does not want to be found too easily. Be careful where you stick your hands over Summer as a native critter of some sort may have taken up residence.
Did you know that a grass fire doubles in speed for every 10 degrees up slope? That means it will outrun a fit bike rider even on a 20 degree slope, so don't take the chance on Severe, Extreme or Code Red days. And never, ever ride into smoke