 The neighborhood roughly conforms to the boundaries of Interstate 84 to the south, Interstate 205 to the east, NE Sandy Boulevard to the north, and NE 65th Avenue to the west.Notable features of Madison South include Rocky Butte, an inactive volcanic cinder cone; the Grotto, a Catholic nature sanctuary; and the Alameda Ridge, a gravel bar left over from the Missoula Floods.Notable structures include Madison High School, Roseway Heights Middle School, the MAX Light Rail NE 82nd Ave Station, and the international headquarters of Banfield Pet Hospitals.