Tamina Gorge Thermal Spring

Tamina Gorge - 36.5°C, 8,000 liters per minute.
Two hunters from the nearby Pfäfers Monastery discovered the healing Tamina spring in 1240. Therefore, the healing properties of Pfäfers' spring water were recognized early on. Initially, the sick bathed in rock depressions, and from 1350 onwards, in wooden bathhouses across the roaring Tamina. Access to the gorge was difficult: those who could climbed ladders. The rest abseiled into the gorge in baskets – blindfolded to combat their fear.
Today, the Tamina Gorge can be explored much more comfortably. From Bad Ragaz, a leisurely one-hour hike leads to the Old Baths of Pfäfers. Halfway through, you pass under the largest arched bridge in Switzerland, the Tamina Bridge. Those who don't want to walk can take the post bus or the Rösslipost (horse-drawn carriage). The entrance to the mystical gorge is located just behind the historic building. A tunnel secures the 450-meter-long path through the rock to the spring water grotto. Here, the Tamina spring bubbles continuously from the rock, day and night, at a temperature of 36.5°C, and 8,000 liters per minute.
Text / Source: Switzerland Tourism
myswitzerland.com/de-ch/erlebnisse/tamina-schlucht-und-altes-bad-pfaefers

Popped by here on our hike. A visit to the gorge and a tour of the museum are definitely worth it

Walk all the way to the end of the tunnel where it's getting warmer and warmer... the 5.- entrance fee is worth it!