By the late 1970s Kadishman had begun to focus on nature, particularly on tree and forest themes, and to work on an environmental scale. Eight Positive Trees reveals this ongoing fascination. At the 1978 Venice Biennale, Kadishman exhibited “negative” forms of stylized trees cut from sheets of weathering steel. The viewer could see through the empty tree-shaped spaces, as well as walk through them to encounter the landscape. The steel silhouettes of Storm King’s Eight Positive Trees are, in fact, the shapes that remained when they were cut from the sculpture exhibited in Venice. In contrast to their negative counterparts, the silhouettes suggest both solid trees and shadows.