This video from the Netherlands says about itself:
10 January 2016
Wadland time lapse we made for SLeM at the 2014 Oerol Theatre and Landscape Art Festival on the island of Terschelling in The Netherlands, the video was shown at the official opening of the festival. It shows the building process of a 1×1 square kilometer labyrinth made of willow branches in the tidal zone of the island. From above the labyrinth resembles part of a painting in the series “Pier and Ocean” by painter Mondriaan (1915).
See also here.