This is the final part of National treasure Odensvi.
To solve this mystery you have 2 options:
Option 1: (if you want to do the whole series in recommended order)
You find information about this cache when you successfully finish National treasure Odensvi 3.
Option 2: (if you want to do this cache individually)
At these coordinates you will find what you need to move forward:
N 59 34,095
E 15 59,012