The cache is not at the posted coordinates
Mittagong Multi
An easy offset multi in the town of Mittagong. The posted coordinates you will take you to a stone you're unlikely to find on a monument website.
To find this cache
Determine the final location using the following calculations:
S 34 26.ABC E 150 25.DEF
ABC = The number of plaques on the stone, add your age, multiply by three, add six, divide by three, subtract your age, multiply by 398.
DEF = The number of plaques on the stone, add your shoe size (for half sizes, round up if you have large feet, round down if you have small feet), add the next highest number to it (eg 100+101), add 9, divide by 2, Subtract your shoe size (remember to round), subtract one more, multiply by 191.
Checksum S=37, E=30