Looking upstream

Fossbakken on the Selva river

The river tunnels under rock where potholes have linked together

Young potholes in Lower Palaeozoic metamorphic rock

#WaterfallWednesday #Fossbakken Tromsfylke, Norway where the Spanselva river falls and tunnels under rock bridges it has created in a landscape underlain by the Norwegian Caledonian orogeny. #OUGS #NorwegianCaledonides 2011 with MarkAnderson