Lelystad
The area encompassed by the crescent serves for measuring sound levels of vehicles. The red platform shape suggests the level of the sea before the Flevo Polder was made.
1985|1986 land art project with red steel element - 100x200x7.50m - test circuit and test center of the national Road and Transport Department of The Netherlands - Lelystad NL (the work has been demolished in the early nineties)