The cache is not at the listed coordinates.
The two geocaches of the "Prisoner of the '70s" mini series are dedicated to the history of the Unix operating system.
We saved the coordinates in our pet PDP-11 mini computer. For a 40 years old machine, it is still quite operational. Ready to try it out?
https://pdp11.ciovil.li
Edit 15-01-2022. The cache has been moved from its original location. The coordinates found solving the puzzle need to be modified with the following correction: N +0.008 E -0.011. The solution checker can be used to verify the coordinates of the current final location.
Edit 22-02-2022. This cache is part of the Master Of Mystery #64 - Tampere (GC9NCJ3) Geocache in Finland.
