The river of basslines

The River Pingo flows through the Torres del Paine National Park in Chilean Patagonia - we took a trek out to the Cascado Salto waterfall, walking along the riverside. In this particular part, the river flows very rapidly over a rock formation in a particular way that generates a low "blooping" tone, almost as if the river is playing its own bassline to accompany its flow - listen out for it in the recording. 

Recorded by Cities and Memory.