Huanglong is an area in central China known for its colorful pools formed by calcite deposits, as well as diverse forest ecosystems, snowcapped peaks, hot springs and waterfalls. Huanglong is also home to many endangered species including the famous Giant Panda. Pearl Boiling Lake, a hot, medical, mineral spring with a temperature of at 21°C is located at the south part of Huanglong. The best time of year to visit the terraced limestone ponds is September and October when blue, yellow, white and green ponds can be seen.
Geysers of Haukadalur
Haukadalur is a valley that contains the largest and most famous Geysers in Iceland, including Geysir and Strokkur. Geysir is the earliest geyser known to Europeans and gave rise to the word Geyser. Eruptions at Geysir can hurl boiling water up to 70 meters in the air. Eruptions may be infrequent however, and have in the past stopped altogether for years at a time. At the moment Geysir erupts around 3 times per day. Strokkur, which is less than 50 meters from Geysir erupts every 10 minutes or so.
Pamukkale, meaning “cotton castle” in Turkish, is an unreal landscape famous for its white terraces. The terraces are made of travertine, a sedimentary rock deposited by water with a very high mineral content from the hot springs. People have bathed in its pools for thousands of years and continue to be one of top attractions in Turkey. The ancient Greek city of Hierapolis was built on top of the hot springs by the kings of Pergamon. The ruins of the baths, temples and other Greek monuments can be seen at the site.
Jigokudani Monkey Park
Jigokudani Monkey Park is a famous hot spring area near Nagano, Japan. The name Jigokudani, is due to steam and boiling water that bubbles out the frozen ground, surrounded by steep cliffs and formidably cold and hostile forests. It is famous for its large population of wild Snow Monkeys that go to the valley during the winter when snow covers the park. The monkeys descend from the steep cliffs and forest to sit in the warm waters of the onsen , and return to the security of the forests in the evenings.
Dallol is a volcanic explosion crater in the Danakil Depression, in Ethiopia. It was formed during a volcanic eruption in 1926, and numerous other similar craters dot the salt flats nearby. This remote area is subject to the highest average temperatures on the planet with an average annual temperature of 34°C (94°F) recorded between the years 1960 and 1966. Dallol resembles the famous hot springs areas of Yellowstone Park but appears to be more wide-stretching.
Blue Lagoon is a Geothermal Spa located in a lava field between Keflavik Internation Airport and Reykjavik in southwestern Iceland. The lagoon is a byproduct of the nearby geothermal power plant. Superheated water is vented from the ground near a lava flow and used to run turbines that generate electricity. After going through the turbines, the hot water passes through a heat exchanger to provide heat for a municipal hot water heating system and is finally fed into the lagoon. The warm waters are rich in minerals and bathing in the Blue Lagoon is reputed to help many people suffering from skin diseases.
Yellowstone National Park was the world’s first national park, set aside in 1872 to preserve the vast number of geysers, hot springs, and other thermal areas, as well as to protect the incredible wildlife and rugged beauty of the area. Yellowstone lies on top of a gigantic hotspot where light, hot, molten mantle rock rises towards the surface. Subsequently, the park contains half of all the world’s known geothermal features, with more than 10,000 examples of geysers and hot springs. Over the past 17 million years or so, this hotspot has generated a succession of violent eruptions including a dozen or so super eruptions. The last full-scale eruption of the Yellowstone volcano happened nearly 640,000 years ago.