There’s a lot of heat under Iceland and it shows itself in some places as hot springs / bubbling mud … we visited a couple of places on our trip, the first is very thick fog!
There’s also places where the heat is converted to a warm “swimming pool”; the famous one being the Blue Lagoon near the international airport (actually waste water from a hydro-thermal electric power station!); we visited there and another place in the north …
M&I / GBMINI 