How to get a big canister geocache out of 3 meter long hollow tree?

How do you get a big canister out a 3 meter long hollow tree? It took me a while, but I made it! This is how:

Cave Caching just across the border from Maastricht

The Caestert caches series is one of my favorites geocaching locations. Recently I noticed there is still one I haven't found yet so it was time for another Caestert cave adventure! The search resulted in a DNF but that's a good reason to go back one more time!