Aerial view of GEO600
Aerial view of the gravitational wave detector GEO600. In the bottom left corner the central building for the laser and the vacuum tanks can be seen. The tubes, 600 m in length, run in covered trenches at the edge of the field upwards and to the right. Buildings for the mirrors are situated at the end of each tube. Credit: Albert Einstein Institute Hannover/Deutsche Luftbild, Hamburg

