Cache can be found at s 33 16.abc e 151 25.xyz.
Cache is a 1L (ish) container with room for most TB's and swaps.
If you have a GPSr with an electronic compass, you may want to switch it off and just use GPS compass. (You'll see why).
FTF prize is one month free membership. (If you're a premium member already, consider saving it for a regular member to try premium)