You know it's been too long since your last caving trip when...

[Leclused]

Wow, which mine is that? I assume that's the original mine survey not how it is now survey like mine will be.

M?re info about these mines can be found here
https://bergloper.nl/ . Go to the ?Waar ?? Tab and look for Zonneberg under Maastricht


They are called ?mergelgrotten? but are not natural😀😀🙁

 

[PeteHall]

When you find yourself sitting in a dark room watching this right through:
https://youtu.be/X_qTeGx46BQ

 

[Roger W]

...you are begging your doctor to send you for an MRI scan so you can experience the feel of a nice tight pasage again.