Myvatn Nature Baths are the Blue Lagoon of Northern Iceland but on a smaller scale. The car park has recently been extended and coach loads choke reception at times, but popularity comes for a reason and it is charming, as pictured.
It is also the closest you will get to swimming in a volcano around these parts - we had our hearts set on swimming in Viti, a white-blue pool in the bottom of a volcanic crater, but it turns out there are two Viti's and the one close to here isn't swimmable. The other remains one for the return trip.
Sum up of the day here goes to Eddie, age 2, who plunged in in his float vest and passed me like a chubby little duckling, with a Mona Lisa smile on his face and his legs pedalling frantically beneath observing: ‘This one’s a bit eggy mummy.’