The hot and the cold water mix in pools and in some places people are allowed to bathe in them. They must do so during daylight hours only. Bathing suits are required, and no alcoholic beverages are allowed.
As you can see I forgot my bathing suit, and as I'd had a beer on the way here I thought it more prudent to stay on dry land! But I loved the effect of the steam. It was very relaxing, though it made my fur a little damp.