Teufelsberg Impressionen

Teufelsberg (German for Devil's Mountain) is a non-natural hill in Berlin, Germany, in the Grunewald locality of former West Berlin. It was named after the Teufelssee (Devil's Lake) in its southerly vicinity. The hill is made of debris and rubble, and covers an unfinished Nazi military-technical college. During the Cold War, there was a U.S. listening station on the hill, which is now fenced off. (source & more: Wikipedia)

Here are some images and a movie provided by Prof. Matthias Scheffler: