A Google search for ["volcanic rivers" iceland] returns a lot of results, with some amazing images like this:
But I have not been able to find any information on where you can see volcanic rivers in Iceland. And "near some volcano" is not good enough - I want to know a specific location. I am planning to travel to Iceland later this year and want to see if this is something I can work into my itinerary.
From my visit in Iceland, the area towards the coast between Kálfafell and Hof came to mind:
Image source: Google Maps
And looking at this geotagged photo by Andre Ermolaev, that seems to be pretty much exactly where he took it (note that most of these are aerial shots though).
I'd imagine there's plenty more places like this, but I remembered this area because it's easily accessible - on the ring road, you basically drive right trough a massive black sand beach / mudflat with rivers meandering through it towards the coast.
You can even make out some of these structures from the satellite imagery on Google maps:
Image source: Google Maps
Image source: Google Maps
