The sculpture was installed in front of the Trumpington Park&Ride terminal building. Two stacks of old English railway sleepers stand up from the ground as if they had been left over from the former railway line from Cambride to St. Ives. A glass cube sits between them like a pearl inside an Oyster. It is the container for those gems of a different kind: film sequences displayed inside the glass cube and visible from both sides reveal the `valuables´. Images of places and faces of the region, of towns and villages along the busway route seem to hover somewhere inside the glass.

On sunny days the glass cube casts colourful reflections onto the pavement below. The secret of the sculpture reveals itself on cloudy days and at dusk when the ambient light decreases. The moving images inside the glass are visible at eye level, but there is no sound.

It is the silent presence of images that forms the poetic quality of the work.