While it's no Bletchley Park, it's the key to your next location. At the coordinates above you'll find your decoder ring:
| At the top: |
7 |
 |
6 |
|
3 |
1 |
| The only three: |
X |
|
X |
|
|
X |
|
| At the top: |
5 |
|
9 |
|
3 |
4 |
| The only three: |
Y |
|
Y |
|
|
Y |
WAYPOINT 1:
45 19.XXX
122 45.YYY
At waypoint 1, count the number of boards down and your path will be revealed.
Make BB = the number of boards.
Let the last three digits of the starting coordinates latitude = AAA. Then CCC = AAA - BB / 24
DD = BB - 2
Now let's check your math. If you add each digit of CCC and DD together (C1+C2+C3+D1+D2) you should get 20. If not, start again!
THE CACHE:
45 19.CCC
122 45.3DD