The park is open every day of the year (except Christmas and Good Friday) from 7am to 6pm (9pm during daylight savings) & entry to the park is free.
For details about the park (and the other caches here) please visit:
Wilson's Walk: Final.
or ..
Wilson's Walk: Exploration.
The Cache
Officially, the path that runs along the back of the park has a less dignified name, but I think calling it 'Back Track' is much more appropriate.
BYO pen and please re-hide the cache-components so that the cache is not obviously visible.