What meets your eyes and ears is always perceived though your cognition might fool you it isn't there. However, wavelengths and computers never lie. -Sed Knowbadih
This is a planned multi cache that turned out it needed to be a mystery cache. An adventure awaits the one who is ready for it, regardless.
Question mark is placed on a good place to park once you have figured out your first coordinates.
You need your wits and your brawn for this one. Oh, and gear up!
The first finder gets a homemade, compact but heavy steel pen.
Good luck. Happy caching!
Swindiana
Use Puzzle-checker to check coordinates to stage 1:
Stage 1 
Use Certitude to get the coordinates to stage 2 while in the field:
Stage 2 