Nancy Holt and Bob Smithson, Emmen (1971)

Photo: Jan Niks. ©The Estate of Robert Smithson/Pictoright Amsterdam.
Courtesy of Nancy Holt

Read also:

Nancy Holt: Sightlines

Broken Circle.nl
James Cohan Gallery (PDF)
Land Art Contemporary
SKOR | Foundation for Art and Public Domain
Staging the Land, Avignon (2012)
OBSART
LOUVRE | Land Art & Cinéma (27.01.12)
Land Art (quelques liens | a few links...)