The year of creation is unknown. This artwork was part of a larger artwork by Charles Vergouwen that he was unable to complete. A vertical placement might also have been the intention, but due to its incompleteness, a horizontal placement in this location is better. 

There is a Special website with all information about Park Heidetuin, images, and arboretum

All images information and Information about the artists can be found here.
This information is provided by Kidor.nl. (Foundation Art in Public Space)