Access to the observatory is possible climbing down a ladder in a vertical entrance shaft. Currently the bottom of the trench is approx. 12 meters below the snow surface. Because of an annual snow accumulation of approx. 1.5 meters the roof of the trench is increasingly depressed. Recording electronics, computers and STL and GSM sensors are installed inside a heated and thermally insulated container. The 3-axis FGE magnetometer is resting outside the container on top of a plastic sewage tube deeply frozen into the snow. All construction materials used are strictly non-magnetic. The broadband seismometer, which is also non-magnetic, is installed at one front end of the trench in a small niche cut into the snow wall. A guidance rope will assist for a safe walk between the base and the observatory when visibility is low during white out conditions, heavy storms or in the dark winter time.