Portugal
I had this little mineral pool all to myself one March day, on a side trip from visiting the Lake of Fire in the centre of Sao Miguel island. It’s nicely warm on a cold day, with a pretty waterfall, and all surrounded by exotically lush vegetation, mainly ferns. A high iron content has coloured the water and surrounding rocks orange. There are a few little wooden changing huts, picnic tables, and steaming fumaroles (geysers) nearby.
Caldeira Velha Park Sao Miguel, Azores
Google map: bit.ly/hrTEhr