To seal the area, the entire Brocken plateau was then surrounded by a concrete wall, built from 2,318 sections, each one 2.4 tons in weight and 3.60 meters high.
The entire Brocken plateau was then surrounded by a concrete wall, built from 2,318 sections and 3.60 meters high. This was to seal the area.2,318 sections were each one 2.4 tons in weight.