We have driven to the South Coast from Canberra many times and love the history and atmosphere of this lovely country town. It just doesn't have enough caches! So stop and stretch your legs a little bit and then head into the town to stop at your favourite cafe or pie shop.
The cache is not at the posted coordinates, instead you will find a four digit number ABCD
Then using simple substitution, calculate the coordinates for Ground Zero
S35 26.A(B-1)(D-C) E149 47.(D-A)BC
Check Sum: S30 E44
Note: 29/12/21 GZ moved and puzzle changed to fit new hide