I usted to write "Don't Follow Me, I'm Lost Too!" on the back of my caving coverall.
Nice to see the look on the faces of the people I took with me into the caves while guiding ;-)
To find this Mystery-cache you can do the according (5) labcache(s).
These labcaches will lead you to 5 caves every Belgian caver would probably visit in his 1th year caving (at least I did some decade ago).
You don't have to enter this caves to find the solution(s), they're closed anyway ...
If you do venture in, you might end up at the "CHU de Liège Sart Tilman"
coördinates: N 50° 34.340, E 005° 33.9967
If you want to visit a cave just contact a local caving club so they can guide you in all safety!
Every cave you'll visit gives you one clue,
put this in the checker to find out where the container is hidden!
If you don't want to do the labcaches however:
How many triangular shapes are there in the gate of the fence
U kunt uw oplossing valideren met certitude.