Stone by stone, a striking new arched wall, “In Good Time,” rose slowly at on the grounds of Duke Environment Hall, the new home of Nicholas School of the Environment.

Designed by Vermont stonemason Thea Alvin to be both a visual counterpoint to the modern steel-and-glass building and an informal gathering place for the Nicholas School community, the 160-foot-long undulating wall is located near the main public entrance of Duke Environment Hall, facing Circuit Drive. It is made of hand-laid, mortared stone from the Duke quarry. Alvin and her partner, sculptor Michael A. Clookey, completed work at the end of February. See additional photos at