A tube of 11km laid on the coast to visualize the Earth's curvature.

A metal tube with the length of 10,8 Km was carried by 310 volunteers to the Belgian Coast on the 14th of May 2010. The middle of this tube was resting on the ground. Five km to the left and 5 km to the right of this center point, the tube was already 229 cm away from the earth’s surface. A straight tube hanging above a convex Earth. A clearly visible and comprehensible image of the bending of the Earth.

The result of this experiment is a photograph of 20 meters long and 3 cm high.