Was out caching for a nearby challenge and thought, "what a shame, there aren't more caches to get along this trek". So now there is!! Nothing special, just a simple two stage multi.
At the posted coordinates you will see a green sign with numbers on it. Counting from the right, take the 4th number and subtract it from the posted north coordinates. Add the first and third number and subtract from the sum to the west coordinates. Now go find your cache!!!