Glossary
Land art
Art made by shaping the land itself (earthworks, stone arrangements, planted forms) usually at landscape scale and inseparable from its site.
The canonical example is Robert Smithson's Spiral Jetty (1970), a coil of basalt and earth reaching into Utah's Great Salt Lake, visible or submerged depending on the water level. The changing conditions are part of the work.
Municipal land art is more modest but real: sculpted park berms, planted labyrinths, artist-designed stormwater features, reclaimed industrial sites. Its stewardship question is unique in the field: weathering and growth are usually part of the artist's intent, so maintenance means deciding how much change to allow, not preventing change altogether.