About us Plan your visit Activities In Depth: A Closer Look at Land Art Tours Land art Deltawerk// (2018) Riff, PD#18245 (2018) PIER+HORIZON (2016) Exposure (2010) Polderland Garden of Love and Fire (1997) De Groene Kathedraal (1996) Sea Level (1996) Engelen/Angels (1994) Aardzee (1982) Observatory (1977) More land art in the area News Support Contact

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Land art / Observatory (1977) /

Thom Ummels over Observatorium