A competition for the transformation of a waterwalk trail into an art installation in the former pool Oud Zwembad in Spiere-Helkijn, Belgium. The waterwalk is a passageway that diverts the existing cycle lane and crosses the entire length of the ecological basin. It creates a void that calls the visitors to enter it, and live an experience which is architectural as much as artistic and environmental, letting nature and the movements of water express the pattern of time on the installation.