The above given coordinates are irrelevant for the cache
location as they just indicate a place where you can find a
triangular sign with nice symbols on it. Although the sign may not
help you to solve the riddle nor is it necessary to go there, it is
certainly an interesting one and also a nice start for the
journey.
Should you wish to find the cache, you need to solve the
Hexenwee - Loop riddle:

The route is up to 4 km long and the terrain can be challenging after the WP 5. In some places the shortest way is not necessarily the best one but perhaps worth of trying.
Please do not add spoiler photos taken near the final.