Olds Park is a great park to spend the day out in, especially if you have a large group and are with children. It offers playground, picnic and barbecue facilities, and allows dogs on leashes. The toilets are also pretty clean.
The thing I like the most about Olds Park is that you can do almost any sport you want there. There are grounds/facilities for AFL, Baseball, Cricket, Netball or Soccer; there are even skate ramps for rollerblades and BMX (as far as I know, though the website seems to suggest no skateboarding). I used to come down here as a kid with my cousins and our rollerblades and we had a great time! There is also a running/cycling track that runs all the way around the 9.5 hectare park which is really popular for locals. Recently, I've noticed the addition of outdoor gym equipment along this track and they are a lot of fun to try out!
So, now to the cache...
The cache is not at the posted coordinates, they are at S 33° 57.XXX E 151° 04.YYY and you need to find XXX and YYY.
1. Go around the running track and count the number of outdoor gym equipment (including the parallel bars). This will give you A. XXX = (Ax75) + 51.
2. One of the pieces of the equipment involves walking. How many letters are there in the word preceeding "Walk" in its name? This will give you B. YYY = (BxBxBxBxBxB) - 211
The cache is a mirco so BYOP. It is a park that is heavily frequented by muggles so make sure to be stealthy at GZ. Hope you enjoy the park and the exercise! It is wheelchair (I think... Unless slopes are a problem) and stroller accessible up until the last 5-10m where there is grass. There are waypoints for the park's parking lots, either is fine as the counting of the equipment can be done in any direction and from any starting point.
Taken from the Hurstville Council website (also see related web page):
This land was part of the original grant given to Dr. Robert Townson in 1810 and in more recent times was a brick pit. Hurstville Council acquired most of the land in 1947 by resuming it under the Local Government Act of 1919. The area was later extended when additional land was acquired in Holley and Queensbury Roads.
Soon after the land had passed to council, it was levelled as a Public Works Depot and a shale pit established. The pit provided valuable road-making material until 1964. There was also a fine two-storey home - Pineleigh - standing about the centre of the Forest Road frontage. It was demolished in 1966 and its gardens consolidated into Olds Park.
The park was named after Oliver Arnold Olds, a prominent resident who served as an alderman on the Hurstville Council from 1941 to 1959 and as mayor from 1946 to 1948.
You can check your answers for this puzzle on GeoChecker.com.