No one could blame you if you have never heard of Trihi. It is not exactly a town
The dozen or so families that live alongside a lagoon, a hill and a small brick hut, make up the tiny farming hamlet in the south-east of South Australia.
But the lagoon, once home to beautiful black swans, has been bone dry for years.
The hill, which the locals describe as a "pimple on a pumpkin", was dug out to pave a new road; and the hut, that once stood proud, is now crumbling to pieces.
And soon the locality will be removed from the map altogether.
We decided to add a Geocache at each entrance to the area, to commemorate the fact that soon it will not show up on maps as being Trihi.