The difficulty is not because its a nano on a train, because it's not a nano on a train... The difficulty is that this place is Muggle central 90% of the time. Please use Extreme Stealth when searching, retrieving and replacing, and PLEASE REPLACE EXACTLY AS FOUND! This is a great park to visit with the geokids and geodogs. There is a well maintained playground and skate park, and a special swing for disabled children. There are barbeques, picnic tables and toilet facilities. Oh...and of course..a Train. A perfect spot to stop for a lunchbreak when you cache the Beautiful Barossa.
Please note that you do not need to climb onto the Train to retrieve the cache.