Translation of Implementierung

I need to write you one more sentence. This is what my teacher told me and the German language is so difficult. So please, as a last favor, would you please write the sentence for me in German?
I wrote you an email. Is this still your address? Please respond if so. Anything goes. I am with May tomorrow. I hope that is OK with you... You're checking out the new Ford, I heard. A great car.
In order to get to this hidden lake one would have to row beneath a cave. On the other side of the cave the five of us were alone. The lake was surrounded by limestone mountains covered with tropical trees.