Solve the following and you shall be REWARDED with a cache with a view!
Do I need to explain how to solve a sudoku puzzle?... I think not... Just substitute the numbers that end up on the letters!
S35 00.ABC
E138 35.XYZ
You can check your answers for this puzzle on 
The above listed co-ords has a sign pointing to a hill, follow the signs, but don't stop at the hill listed on the sign, it's the next one...
Cache is a cammo'd 1 litre of SPC's finest. Follow the firetrack till you get close and please be
VERY AWARE OF POSSIBLE PRESENCE OF SNAKES
Check out the houses!
PS: Hope you all are saving your previous solved puzzles in anticipation of #13 hehehehe