"Verde del bosco" (Forest Green) exemplifies Penone's sustained artistic investigation of the relationship between human intervention and natural growth, a central concern throughout his career since the 1960s. The work typically involves the artist's physical engagement with trees or wood, revealing the layers and memory embedded within natural materials through casting, imprinting, or carving techniques. Penone's practice situates his body and actions as a means of dialogue with nature rather than domination over it, reflecting his broader philosophical commitment to environmental consciousness and the poetics of natural processes.