Firstly, the location. As the cache is a small one with a magnet in it, look for somewhere magnetic. It is on the start of the bridge connecting the first of the islands in the wetlands to the second one. Left side of the track.
And then the container. The container is a black plastic 'bottle' and has ten cents in it. However, you can not get the 10c out (hence the name 3d trap) because I put it in halfway through the print.
Good luck and I hope you enjoy this walk in the wetlands.
Congratulations gridge98 on your FTF!