Passage through a Portal is a tableau of three stainless steel sculptures, ranging from 2.2 to 3.9 metres in height, installed over an inclined landscape at Shenton College, Perth. The work depicts a sphere in an implied time sequence, before and after rolling through a circular arc. The sphere exists in two versions; one  smooth and reflective, the other a geodesic tessellation of 180 triangular facets. The arc has the geometry of a hexagonal Mobius loop - composed of triangular facets arranged in bands that are alternately mirror-reflective or rainbow polychromatic.