The location here is Brandenburg.  The city was put in charge of removing the trees.  The actual site needs to be located.

Forest swastika

The forest swastika was a patch of larch trees covering 3,600 m (4,300 sq yd) area of pine forest near Zernikow, Uckermark district, Brandenburg, in northeastern Germany, carefully arranged to look like a swastika. It was probably planted near the height of Hitler's power, in the 1930s.

• http://en.wikipedia.org/wiki/Forest swastika