This cache is a Reverse Wherigo.
If this is your first Reverse Wherigo click on this link to download “The Reverse Cache – beta”. For smartphone users I recomend the Pocket PC version. Otherwise start the cartridge and click “Play”, not “Resume”.
After starting the cartridge follow the prompts. When asked to enter something you will enter it as your “Answer” and then click “Done”.
The cartridge will give you instructions on how to play.
Enter the following numbers when prompted to do so.
114332
408906
883457
When given warning instructions be sure to answer “OK” and not “Cancel”.
Your inventory will contain “Reverse Cache Box”, that is what you use to find the cache. The other items in your inventory are information.
This link may help Android users.