hot spring
thermal spring

The site of the hot spring has since become a car park.

He had not known there was a hot spring in the area until now.

Whatever they did at the hot spring, it seemed to have helped.

It is the second largest hot spring in the world.

"Do you think we could find our way to the hot springs with this?"

The town is built around a popular hot spring which was discovered in the late 19th century.

For at this spot a hot spring ran into the river.

He walked ahead of her along the path to the hot spring.

If you've got time, research the natural hot springs found.

The area is noted for a large number of hot springs.