This is a JAPTOF.
In the old days people used these. And it took a week for a mail communication to travel between Johannesburg and Cape Town.
That is 604 800 seconds. It now takes a few seconds. So email between Johannesburg and Capetown is about a quarter million times faster than than it used to be with written letters.
It should take you about the same length of time to find this cache as it does for an email to travel between Johannesburg and Cape Town.