The challenge is to find your way across the country by finding clues in the scenery.
After succesful completion you can submit your solution to check your result.

The challenge is that you have to fly, look, calculate, and write at the same time, just like real pilots. 

Difficulty: Hard. Total distance ±85 nm.
This puzzle is more difficult than the previous puzzles because the legs can be up to 20 nm and there are decoys: not all cubes you see are correct! This requires good flying and navigation skills.
If you want a relaxing flight then don’t fly this one but other puzzles instead:
https://flightsim.to/file/5507/puzzle-0-navigation-challenge-tutorial
https://flightsim.to/file/5508/puzzle-0-navigation-challenge-netherlands-belgium-border
https://flightsim.to/file/6443/puzzle-2-navigation-challenge-around-paris

A tutorial video is available on https://youtu.be/-G5eEMJr5Q8 introducing the idea and some tips but this puzzle is slightly different from the tutorial. Read carefully.