This bonus cache is located nearby the cliffs in Vale da Telha.
The coordinates given in the cache description will not lead you to the box but only to the road which we suggest to take, while searching for the bonus.
In the following four Vale da Telha cliff walk caches you will find numbers, which are needed to get the coordinates for the bonus.
Let us call the numbers you will find as follows:
Cliff walk 1: A
Cliff walk 2: B
Cliff walk 3: C
Cliff walk 4: D
To get the coordinates you just have to make this simple calculation:
N 37. 18. (A-C)+9
W 008. 52. (B-D)-27