>>159735There are many hot pools like that actually, maybe that one is particularly photogenic or osmething. There's one that's so big and steamy you can't see all the way to the other side really (pic related).
The blue I guess is from minerals, the bright colours are 'orrible bacterial tendrils of legionnaires' disease and other nasties.
Also I think that's the famous pool where 24yr old David Allen Kirwan chased a dog named Moosie into the water. Google it... they both died.
