About SideTracked Caches
This cache belongs to the SideTracked series. It is not designed to take you to a magical place with a breath taking view. It's a distraction for the weary traveller, but anyone else can go and find it too. More Information can be found on the SideTracked Series website at www.sidetrackedseries.info
As per Wikipedia,
Tottenham railway station is located on the Sunbury line in Victoria, Australia. It serves the western Melbourne suburb of West Footscray and opened on 2 March 1891.
The station is located on the Ashley Street rail overpass, which provides station access. Tottenham Yard runs north of the station. A number of freight-only lines also operate alongside, as well as the Melbourne – Sydney and Melbourne – Adelaide standard gauge lines. The Regional Rail Link lines run on the south side of the station.
The cache:
It's hidden as per the hint.
I would recommend that you use public transport to arrive at gz and be a sustainable geocacher
Else, park at the carpark and walk back to find this cache.