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)