What can be understood as a cry for peace and international collaboration was Wijdeveld’s proposal titled 15 miles into the earth. He suggested to dig this 15 miles deep hole in the heart of Amsterdam, in the Vondelpark. The hole would serve as an international geological research centre, covered with a glass dome - so that people can peak inside. On the bottom of the hole a “world theatre” would find its place, where the primordial forces of nature and human creative energies would collide and create new ideas.
