The river begins in the highlands between Borås and Vårgårda, draining through forests, farmland, and industrial towns before reaching Gothenburg and emptying into Göta älv. It passes more people than almost any other river in Sweden. Yet along its middle stretch, where the valley narrows and the forest closes in, it retains a quality untouched by urbanisation.

Spring brings higher water and stronger currents; the rapids are loud, the flow forceful. By summer, the level drops and the riverbed emerges: stones, moss, and the sound of shallow water over rock, children playing and swimming. In autumn, the light shifts across the water and the forest comes into colour along the banks. Each season is audibly distinct.

The valley itself is older than the river. When the ice retreated after the last glaciation, meltwater filled this landscape, forming a deep-sea inlet. What is now forest and footpath was once seabed. The geology is still visible — deep ravines carved into the bedrock, shell deposits in the soil, moraine ridges left behind by the ice.

The protected stretch runs four kilometres between Floda and Stenkullen. The forest here is noble deciduous — alder, ash, oak — with wood anemones and liverwort covering the ground in spring. The dipper and grey wagtail work the rapids year-round. The river supports a genetically distinct strain of sea trout, one of the few remaining wild populations in the region. A bypass channel at Hedefors, completed in 2013 and now the longest of its kind in northern Europe, restored the upstream migration route.

There are no roads along the water's edge. The only way in is to walk.

The first Instrumental Place was built on this stretch of the river. Every sound in the instrument — the tuned effects, the textural beds, and the tonal layers — carries the acoustic signature of the Säve River. The granite, the water, and the particular way sound behaves in an open river valley in southern Scandinavia.