This little reserve is the site of the former Belvidere Cemetery. There is little information available on the history of this site. There are no marked graves here. Today the land is known as the Belvidere Cemetery Reserve and is maintained by the Alexandrina Council.
At the posted coordinates is a sign with 6 words on it. Count the number of letters in each word to get the values for A,B,C,D,E,F.
The cache is then at S35° 1C.(A-C)B0 E138° 5(F-2).D(E-C)7
The checksum for the minutes is 20 + 28 = 48
If this was a gridge98 cache, it'd be called UNAL however it might be possible to get to it without a ladder. (although retrieving the cache is a lot easier with a ladder!)