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Cool, I've re-threaded it in today's TravelCast (you can also post there):

https://inleo.io/threads/view/adambarratt/re-leothreads-23mxfvj3e

is it a hot spring?

Nope, but it was hot enough there! 😉

The color of the water looks like a spring but I can’t tell from the photo if it’s a hot or warm.