South Waterfront Park

South Waterfront Park is a 4.52-acre park in Portland, Oregon, United States. The park was acquired in 1999.

The basalt, concrete, and steel sculpture by Mathieu Gregoire, River Shift, reflects the historical progression of the riverbank with his use of local basalt and remnants of the concrete piers and reinforcements excavated from the old waterfront site.
As the basalt pieces progress from berm to river, they tip over, so that the concrete below becomes exposed and the basalt becomes submerged and eventually disappears.