Amazing 5m roof climb through a tunnel. Crouching start from a big through-hole, and climb by all manner of heel hooks, toe hooks and jams to the cave entrance. The crux is at the very end! Enjoy!
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.