The Swimming Bath
The swimming bath in Roman Baths. The water comes from a naturally hot spring and is always warm. The steam of the water is very difficult to capture by the camera, but can be seen here as a white layer on top of the water in places. A scientific explanation of the warm water is below:
"The water which bubbles up from the ground at Bath falls as rain on the nearby Mendip Hills. It percolates down through limestone aquifers to a depth of between 2,700 meters and 4,300 meters where geothermal energy raises the water temperature to between 64 °C and 96 °C. Under pressure, the heated water rises to the surface along fissures and faults in the limestone."
