Translation of zurücksetzen

It seems a little bit like a pot in which you want to be happy and rich and enjoy your luck not caring about others. For example, the population is diminishing (or it was so during the last decade).
I almost forgot to tell you, that the water was brown, despite of its name... Anyway, as I was already close to my next destination I went and consulted with a tourguide of Austrian travelers.
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.