To find this bonus cache, you will need to use your keen skills of observation and complete the Observation Skills 101 Adventure Lab.
To play an Adventure Lab, you need to download and install the Adventure Lab app to your phone from either the Google Play Store or Apple App Store. You can sign in with your usual geocaching id.
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Click here to begin the Adventure, or scan the QR code below:
To find this bonus cache, you will need to complete the Adventure above, during which you will gather the numbers represented by A, B, C, D and E in the coordinates below. But before you can calculate the coordinates, you will also need to get F. F = the number of steps up the lookout at the final Adventure location.
Now, you can use the equations below to work out the location of this bonus cache:
South 37° 42.(A + B + C – D + E – F)′
East 175° 16.(A – B + C – D – E + F)′
Bring your own pen as there isn't one in the final bonus cache.