With the Yestermorrow Design/Build School, constructed an 1,100-square-foot experimental house made entirely out of concrete. Grain patterns from the wooden forms are still visible in the walls. Cement pillars rise out of the spring-fed pool behind the house and support the upper porch. A large fireplace features both clean concrete lines and unfinished stone. Part of the project was about getting back to the same philosophies that formed Prickly Mountain.