gerrit-worldwide.de

Not a good tree to climb.
Do you mind if I use this shot in my lectures? It's a good illustration of erosion by undercutting.

From Wikipedia: "The Jasmund National Park is a nature reserve in the Jasmund peninsula, in the northeast of Rügen island in Mecklenburg-Vorpommern, Germany. It is famous for the largest chalk cliffs of Germany, the so called Königsstuhl (German = "king's chair"). These cliffs are up to 161 m high above the Baltic Sea. The undisturbed beech forests behind the cliffs are also part of the national park." see more on http://en.wikipedia.org/wiki/Jasmund_National_Park or http://de.wikipedia.org/wiki/Nationalpark_Jasmund

Ein Baum beim Abseiling ;-)