These thermal features are still in demand in the city's numerous spas and even exploited for domestic use.

The heat source of the thermal features in this location is thought to be relatively close to the surface, only 10,000 feet (3,000 m) down.

During the winter, the underwater thermal features are visible as melt holes in the icy surface of the lake.

Because the geyser was discovered early in the 20th century, it has no Māori name, unlike almost every other thermal feature in the region.

Yellowstone National Park contains the largest and most diverse collection of natural thermal features in the world.

Some of these thermal features still discharge, with their presence evident as gas bubbles rising from the vents in the lake bed.

Beside solfataras, other thermal features present are hot springs located on the east and west flank of the volcano.

This has a compact cluster of thermal features and storage or refuse pits.

The thermal features of Mammoth can be view in a couple of hours.

The machine will compare your thermal facial features with the ones we're about to place on your permanent file.