On Hyperallergic, you'll find a great article about the current developments surrounding this artwork in Mexico City. It has many links to the questions in our Land Art Lives program, such as how do you deal with the changing environment of the artworks? Because not only are they themselves getting older, their contemporary environment can cause them to no longer be experienced properly. In Flevoland, it is the encroaching windmills that affect the artworks. Former Chief Government Architect Floris Alkemade suggests in the book Land Art Live that from now on the sightlines of the Flevoland works should be taken as the starting point for spatial design of the surroundings - just as in London Saint Paul's Cathedral determined all sightlines in the city center.