A Brave New World has been established as an extension for Abbotsford. From here young people are going to a Brave New World of eduction. To facilitate this a passageway has been opened to the Brave Old World (which is where the school is located).
You are looking for a 200 mL snap-lock container. It is hidden on the Old side of the passageway. It would be best to access this from the Brave New World (so new, it may not be on your maps yet). Additionally, you should try to avoid those seeking their Brave New Education (especially at 9 in the morning and 3 in the afternoon).
There is no need to go above the passageway and definitely no need to go anywhere near the rail line. It can be reached while standing on the grass beside the public walkway.