Oblio House in Cedar Crest, New Mexico is a study of intersection between circulation and topography. Built on a steep hill, the design organizes the house on two levels that step down the site to the main living spaces that open onto a terrace. Entrance is from the upper level, passing in between two walls acting as a curtain between two worlds. Once inside, circulation doubles back in the opposite direction revealing views of the private natural sanctuary and accessing the guest quarters, study loft and bathroom. The lower level is accessed by stairs that are aligned on axis with South Mountain. This axis intersects the orthogonal geometry of the lower living area. The lower level contains: open living / dining / kitchen area; utility and master bedroom suite. These areas open onto a terrace that steps down into the natural private landscape that surrounds the house. The house is constructed of polished concrete floors, insulated concrete forms (ICF), and recycled wood stud framing. Exterior finishes are stucco and rusted metal roof and wall panels. The house utilizes passive solar photovoltaic and hot water roof panels for electricity and in-floor heating. Rain water is collected into underground cisterns for landscape irrigation.