A partial view of the horizon observatory, which was constructed on the northern summit plateau of the Hohe Ward spoil tip.

A partial view of the horizon observatory, which was constructed on the northern summit plateau of the Hohe Ward spoil tip. The meridian and equator arcs have a radius of just under 46m, the steel pipes themselves have a diameter of 1.41m and a wall thickness of 18 to 50mm. The meridian and equator arcs are connected to each other at a height of over 31m. Herten 30.12.2008
More info: http://de.wikipedia.org/wiki/Halde_Hoheward and http://www.herten.de/emscherbruch2004/

Klaus Muhs 04.01.2009, 1039 Views, 0 Comments * automatically translated