It’s raining on the watershed!
“Follow the range that divides the waters” was the original intention for the location of the NSW/QLD border. The first section, that starts near this cache and finishes at the Dumaresq River, is known as The Watershed.
Queen Victoria signed the letters patent allowing this new border. Do you think this ended up in a letterbox? Or, a letterbox hybrid of some sort? This is a Letterbox Hybrid cache. In this case, the cache IS at the listed coordinates and contains a stamp if you wish to use it. Note: The stamp is not a swap item. Happy caching!