Postcard Day 2025 ⚡️
Contains small swag items, a logbook, and a stamp. No ink pad will be provided so if you do stamps, please bring you own ink pad. There is a 2006 MnGCA geocoin inside for FTF, too!
Winter-friendly.
Big enough and secure enough for trackables/geocoins.
1. How to find it:
This is a Letterbox-Hybrid and it is NOT located at the posted coordinates.
From the posted coordinates, project a waypoint 3740 feet at a bearing of 338.75 degrees.
Do you have new coordinates? Click on the mailbox image to verify them.
2. How to open it:
OK, good work - you passed step 1! Go ahead and navigate to those new coordinates now and find the Letterbox container. But you aren't done yet because it'll be LOCKED when you get there! You'll need to solve this puzzle IN THE FIELD by using your math skills (plus a little Google) at GZ.
P + O + S + T =
P = The number on the top of the Letterbox container
O = The year that the US government issued its first official postcard
S = The number of cents one postcard stamp costs to buy in the US (as of July 13, 2025)
T = The year that geocaching started
Do you have a 4-digit answer? Click on the postcard image to verify it.
If you did everything correctly up to this point, you should now have the lock combo. Great job!
Please be sure to leave the stamp inside the container. The stamp is NOT a swag item.
This container was placed with permission and the attachment method was approved by the property owner.