Dajarra,
The last stop for fuel if travelling from Mount Isa to Boulia.
If travelling the other way youre nearly at the Isa.
To calculate the final coordinates for this cache...
You will need to read a sign...
Just down the corner from the posted coordinates.

To work out the final...
You will find 4 numbers on a sign.
Probably add all 4 numbers to start with...but hang on to this sum.
Middle digit of the fourth number and the middle digit of the third number.
Fourth number, but take the second and third digits and swap them around.
Take the second and third digits of the sum of all four numbers , but swap them about.
Take the first 3 digits of the sum and add 30.
Thats about it...
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