Pedro Martin Ureta was crushed by the death of his wife. She loved guitar music, so he constructed a kilometer-long memorial to her on his farmland in Argentina in the shape of a guitar. Cypress trees make up the outline, and eucalyptus provides the blue strings. This is just one entry in a list of eight examples of land art; see all of them at The World Geography. Link -Thanks, Bosko!
That's very nice.
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