Lake Quilatoa is a water-filled caldera in the westernmost volcano of the Ecuadorian Andes, located in the province of Cotopaxi. The crater lake can be reached via a hiking trail that passes through several remote Andean villages in Ecuador. This route usually takes 3-4 days, you can get there faster by intercity bus.
Photo: Wikimedia
In 1991, Mount Pinatubo exploded, causing its original summit to collapse. The result was an acid lake, but heavy rainfall helped to increase the water volume and form a normal pH balance.
Photo: Love These Pics
Okama is a round crater lake surrounded by three mountains of the Zao ridge. Its water is rich in acids. The color on the surface magically changes with sunlight.
Photo: Trover
Inferno - a crater lake with signs of a geyser, the waters of which maintain a temperature of 35 to 80 ° C and an increased acidity up to pH 2.2. The reservoir was formed from an explosion on the slope of Mount Haszard during the eruption of the Tarawera volcano in 1886.
Photo: Travel Tourism Blog
Keriz or Kerid is a volcanic lake located in the Grimsnes region in southern Iceland, on tourist route gold ring... It is one of the most popular crater lakes in the region.
Photo: Guilhem DE COOMAN
Ljotipollur means "ugly puddle", but beauty can be found even in the ugliest one, right? This red lake is located in the south of Iceland's Highlands, in the southernmost crater of the Veidivotn system.
Photo: Atlas of Wonders
Fakaari (Whakaari) or the Isle of Wight is an active andesite stratovolcano, lying 48 km from east coast North Island New Zealand. The eruption in 2000 led to the formation of a new crater, which turned into a lake.
Photo: MarliMillerPhoto
Crater Lake in Oregon is one of the most famous calderas in the world with deep blue clear waters. It is the main attraction of Crater Lake National Park and the deepest lake in the United States.
Photo: CRONICAS DE LA GUINEA ECUATORIAL
Lago de Moca is located at an altitude of 1500 meters above sea level, 70 km from the capital Equatorial Guinea... This place got its name in honor of the former local ruler of the African people, Bubi. It is currently popular tourist destination and part of the protected area of the Luba Crater Science Reserve.
Photo: Travel Pal
Lonar is a closed salt lake in meteorite crater located a few hours drive from the Indian city of Aurangabad. On the shore of an alkaline reservoir, soda and salt deposits are formed. The smell is unforgettable, but it does not scare tourists away.
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Yugama is a crater lake at the top of Mount Kusatsu-Shirane. It is known as the most acidic body of water in Japan.
Photo: Earth Observatory
The volcano La Cumbre is located on the uninhabited island of Fernandina, which is known as an unspoiled island. It is unique in that there is not a single imported mammal here.
Photo: Our planet
Maly Semyachik is an active stratovolcano with the Troitsky crater, which is filled with a hot, acidic lake.
Photo: Wikipedia
Lake Deriba lies at the highest point of the Jebal Marra Mountains in a volcanic crater with high walls.
Photo: Volcano Cafe
Hnausapollur is one of two crater lakes (the first # 6 Ljootypollur) in the Veidivotn system south of the Tyungnaau River.
Photo: Tan Yilmaz
Lake Rano Kau is easily recognizable by the green thickets of grass. It is located at the bottom of the thyroid volcano Rano Kau, whose eruption was instrumental in the emergence of Easter Island in the southern part. The Pacific.
Photo: Pinterest
Lake Eskyuvan is located in the crater of the Askja volcano in the northeastern part of the Vatnaekul glacier. It was formed after powerful eruption in 1875. Esquan is the second deepest lake in Iceland.
Photo: TravelCie
Lake Toba is located in the caldera of the extinct supervolcano of the same name. It lies on the site of a grandiose eruption, which became the largest explosion on Earth in the last 25 million years.
Photo: CopiPanas
Lake Segara Anak formed in the caldera of the Rinjani volcano and covers an area of about 11 square kilometers. This stunning blue pool is over 2000 meters above sea level.
Photo: Dieter Behrens
Over three kilometers of East Java hike leads to a surreal turquoise lake surrounded by gray. This is an unusual coloring for a landscape at the top of a volcano. Ijen is the main source of livelihood for the local people who mine sulfur from the volcano.
Photo: Tan Yilmaz
Lake Cuicocha is located in a three-kilometer caldera at the foot of the Cotacachi volcano in the Western Cordillera of the Andes. In the center of the lake lies a pig-shaped islet, which is why it is called "Lago del Cuy" or Guinea Pig Lagoon.
Photo: Fine Art America
According to the legend of El Dorado, it is possible that it was on Lake Guatavita that the Muisca Indians performed a ritual during which they threw gold into the sacred waters. This round pool is one of most popular destinations for ecotourism in Colombia.
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Volcanic island Both are often hiding in the clouds. When it is still open for observation from above, two lakes, resembling a pair of emerald or turquoise eyes, attract attention. This island is considered the most a large volcano Republic of Vanuatu.
Photo: Wikipedia
This crater lake has become a major local attraction. Blue Lake interesting for its ability to change shades of blue depending on the season. From the end of March it is dark blue, and then from the beginning of November it takes on a deep turquoise color.
Photo: Costa Rica Guide
Diego de la Ayia is a lake in one of the craters of the Irazu volcano in the Central Cordillera. The depth of the reservoir is over 90 meters. Its waters are distinguished by high mineralization and the ability to change color from emerald green to dark red.
Photo: Wikipedia
The crater lake of the Kasatochi volcano with an area of about one kilometer is located about 20 meters above sea level. This island belongs to the Aleutian Ridge, which separates the Bering Sea from the North Pacific Ocean.
A crater lake is formed in the crater of a volcano or in a caldera, that is, a depression that appears due to the failure of the top of a volcano. It can also occur in an impact crater that forms on the surface of our planet as a result of a meteorite falling, or as a result of an artificial explosion created by man.
Water active volcano are often highly acidic, that is, saturated volcanic gases. In such lakes, a deep green sediment is observed. Lakes in dormant or extinct volcanoes are characterized by fresh water and, as a rule, exceptional transparency.
We invite you to find out about the most beautiful crater lakes in the world.
1. Crater Lake Crater, Mount Mazama Volcano - Oregon, USA.
This lake is known for its striking blue color and incredibly clear waters. Crater Lake is the deepest lake in the United States, with a depth of 594 meters. The reservoir is powered exclusively by atmospheric precipitation.
2. Crater Lake Quilotoa - Ecuador.
The depth of the lake is 250 meters, and the water in it has a greenish tint. This color is due to the dissolution of minerals. The lake itself is very cold, along the coast in some places there are hot springs and microgasers that gush from cracks in the crater.
3. Crater lakes Albertina Rift - Africa.
These lakes include some of the deepest lakes in the world. For example, Lake Tanganyika, which is 1470 meters deep. All lakes were formed as a result of rifts.
4. Crater Lake Kelimutu - - Flores Island, Indonesia.
Kelimutu volcano has three crater lakes of different colors on its summit. The water in Lake Tiwu AtaMbupu is blue, Lake Tiwu Nuwa Muri Koo Fai is green and Tiwu Ata Polo is red. This place is of particular interest among geologists, as three lakes of different colors are located on the top of the same volcano.
5. Mount Pinatubo Crater Lake - Luzon, Philippines.
The lake was formed after the eruption of Mount Pinatubo in 1991. It is the deepest lake in the Philippines, as its depth is 800 meters.
6. Crater Lake Okkama (Lake of Five Colors), Mount Zao - Honshu, Japan.
The lake was formed in 1720 after the eruption of the Zao volcano. It is also known as the "Lake of Five Colors". The thing is that the water in the lake changes its shades depending on the weather. The depth of the lake is 600 meters.
7. Crater Lake, Mount Katmai - Alaska, USA.
In the center of the Mount Katmai stratovolcano there is a lake, which measures 4.5 by 3 kilometers. It was formed in 1912 as a result of an eruption. The surface of the crater lake is located at an altitude of 1286 meters.
8. Crater Lake on Taal Volcano - Luzon, Philippines.
The view of this lake is one of the most scenic attractions in the Philippines. A cliff rises above the lake, which is called the Point of the Volcano.
9. Crater Lake Deriba, Jebel Marra - Darfur, Sudan.
The crater of the dormant volcano Deriba is located at an altitude of 3042 meters. Its diameter ranges from 5 to 8 km. Inside the crater, a lake was formed as a result of an eruption about 3,500 years ago.
10. Crater Lake, Mount Ruapehu - New Zealand.
Ruapehu Volcano is one of the most active volcanoes in the world. It includes three peaks: Tahurangi, Te Heuheu and Paretitonga. Between the peaks there is a deep active crater that fills with a lake between major eruptions.
11. Crater Lake Yak Lum - Ratanakiri, Cambodia.
The incredibly beautiful lake is located in a 4000-year-old volcanic crater. The lake is very deep, so the water in it is clean and transparent. Lake Yak Lum has an almost perfect circular shape. It is surrounded by rich tropical forests inhabited by exotic birds.
12. Crater Lake Kerid, Iceland.
Minerals enter the lake water from the soil, as a result of which it is not transparent, but at the same time strikes with its bright aquamarine color.
13. Crater Lake Licankabur - Chile.
The dimensions of this crater lake are 70 by 90 meters. Almost all the time the lake is covered with ice. Lake Likankabur is one of the highest mountain lakes in the world. Despite the fact that the air temperature in this area can reach -30 degrees, plankton animals are found in the lake.
14. Geothermal Crater Lake Viti - Askja, Iceland.
The diameter of this lake is approximately 150 meters. Its depth reaches 7 meters. The water in the lake is intensely blue, as it contains minerals. A strong sulfur smell is emitted from the water.
15. Heavenly Lake, Mount Baekdu - China, North Korea.
This lake is located on the border between China and North Korea. The lake was formed by a violent eruption in 969 (± 20 years). The lake covers an area of 9.82 square kilometers. The average depth of the lake is approximately 213 meters. From mid-October to June, the lake is covered with ice.
The Dead Sea is located in the deepest depression on land and lies at a depth of 430 meters below sea level, the water level decreases by 1 m per year. The salinity of the lake is 300-350 g / l. The mineralogical composition of the Dead Sea salt is unique, this is what made it possible for the development health resort which attracts many tourists.
Lake Assal volcanic origin is located in the crater of an extinct volcano c. It is 155 meters below sea level (this is the lowest point in Africa) and has a salinity of 350-400 g / l. Around the lake there are valleys with saline soil and extinct volcanoes and on the shores, salt crystals form whimsical landscapes.
Lake Elton- the saltiest lake in Russia, located in the Astrakhan region. It is the largest mineral lake in Europe with an area of 152 sq. Km. It is saturated with brine (brine), the sources of which are located at the bottom of the lake. The salt content here is 200-500 g / l, which is one and a half times more than in the Dead Sea. The bottom of the lake also contains algae, which gives the water a reddish tint. The ancient name of the lake comes from the Turkic "Altyn-Nur", which means "Golden Lake". The lake takes on a golden or red color when the sun's rays fall at a certain angle, usually in the afternoon.
2. Acidic
Lake of death- one of the most dangerous lakes, swimming in which is fatal to humans, is located in Sicily. The lake is devoid of all life, even along the shores there is no vegetation. Scientists who explored the lake found two sources at the bottom that throw sulfuric acid into the water, it is this that makes this lake dangerous to all living things. 
Lake Maly Semyachik in Kamchatka it is located in the crater of a volcano. Due to volcanic activity, the concentration of acid and sulfur is high here. The combination of hydrogen and acid, reflecting the sun's rays, gives the lake an extraordinary color - from a height the lake looks bright green. Almost always the water temperature was 30-40 degrees, but after 1992 the lake began to freeze in winter.
Lake Kawa Ijen located on the island of Java. It is the largest hot sulfuric acid lake. Sulfur mines are located along the banks. A fog hangs over the lake from sulfur vapor from the volcano's crater. The vapors are very poisonous and deadly for all living things around.
3. Unique in chemical composition
Ink lake located in Algeria, it really is filled with ink. This connection was formed thanks to two rivers flowing into this lake. The water of one of them contains a solution of iron salts, the other contains organic compounds of peat bogs. Mixing in the lake basin, the water of these rivers turns into ink. The lake is fatal to all life, but its ink is used in ballpoint pens that are sold to tourists. 
Asphalt lake Peach Lake located on the island of Trinidad. It was formed in a natural way: the oil lying at great depths passes through the mouth of the volcano, and volatile substances evaporate from it under the influence of high temperature. This is how oil turns into asphalt. It is used not only for their own construction needs, but also exported to other countries.
4. Colored
Lakes come in different shades: red, pink, crimson, green, blue, white. The reasons for this color are also varied: it can be algae, microorganisms or minerals dissolved in water. There are a lot of such colored lakes on the planet, let's talk about the ones closest to us.Crimson lakes in the Astrakhan region are painted in a pale pink color due to the presence of armetia crustaceans in the water. In addition, these crustaceans, when decomposed, impart a raspberry flavor to the water. The salt that is extracted from these lakes has White color and it smells like raspberries.
Pink Lake Masazir located in Azerbaijan, 16 km from Baku. Salt is mined on the lake, so it is almost completely fenced off. The pink color of the water is given by algae, and the intensity changes depending on the light. The most intense color can be seen in sunny weather.
Koyashskoe- one more pink lake, located in the Crimea. Once it was part of the Black Sea, and now it is separated from it by a 100-meter strip of land. The water is salty, and the shores are covered with crystals of salt, which have a violet scent thanks to algae.
Black Lake Kahinaidaah in Yakutia it is a solution of soot, ash and soot. It was formed in the depression of a coal deposit. This deposit burned for a long time, and then was flooded with water.
Yellow lake Sarykul v Chelyabinsk region acquired color due to particles of clay dissolved in water.
White lake on the island of Kunashir it has a milky white color and is filled with a solution of sulfuric and hydrochloric acids. Volcanic gases heat water to a boil.
A crater lake is a lake that forms in the crater of a volcano or caldera. Also, the lake can appear in a meteorite crater or in an artificial depression created by man (for example, as a result of an explosion). Sometimes lakes formed in calderas are called caldera lakes, although more often such distinctions are not made. Crater lakes that occupy the vents of active volcanoes are sometimes called volcanic, and the water in them is often acidic, saturated with volcanic gases and turbid with a strong green tint. Lakes in dormant or extinct volcanoes have fresh water, and the transparency in them can be simply amazing due to the absence of inflowing streams and sediments. Crater lakes form when moisture within them fills a depression. The water level rises until an equilibrium is reached between the ratio of the entering and leaving water. Sources of water loss can include evaporation, underground leakage, and sometimes surface leakage or excess water when the water level in the lake reaches its lowest point on its edge. We present to your attention some of the most beautiful crater lakes in the world.
(15 photos total)
1. Crater lake of the Mazama volcano, Oregon, USA. A well-known crater lake in the USA. It is located in the caldera of Mount Mazama. This is the deepest crater lake in the United States - its depth is 594 m.It is fed by rain and snow, there are no sources of water inflow or outflow on the surface, and therefore it is one of the cleanest lakes in the world. (Ben Canales)
2. Lake Quilotoa, Ecuador. Quilotoa is the water-filled caldera of the westernmost volcano in the Ecuadorian Andes. The caldera, 3 km wide, was formed by the collapse of a dacite volcano after a catastrophic eruption 800 years ago, which resulted in pyroclastic flows and lahars that reached the Pacific Ocean, and a huge amount of ash was released into the air. Since then, the caldera has turned into a lake 250 m deep with greenish water (due to dissolved minerals). There are hot springs on the eastern slope of the volcano, and fumaroles have formed at the bottom of the lake. (Annom)
3. Crater lakes of the Albertine Rift in Africa. In a region full of people, there are still few free places- for example, a rift in the Queen Elizabeth Park with crater lakes formed by volcanic eruptions. If in the 1920s and 1960s. this place would not be occupied by environmental agencies, they might not be here now. The Albertine Rift is propped up by some of the most high mountains in Africa, including Mount Virunga, Mitumba and Rwenzori. There are rift lakes here, which include some of the deepest lakes in the world (up to 1470 m). Much of the region lies within national parks such as Virunga Park in the Democratic Republic of the Congo, Rwenzori Park and Queen Elizabeth Park in Uganda. Lake Victoria is considered part of the rift valley system, although it actually lies between the two branches. All the great lakes of Africa were formed by the formation of a rift and are located within the rift valley. (Joel Sartore)
4. Crater Lake Kelimutu, Flores Island, Indonesia. Kelimutu volcano has three amazing crater lakes of different colors. Tivu Ata Mbutu (Lake of the Old People) is usually blue and the westernmost of the three. The other two - Tivu Nuva Muri Koo Fai (Lake of young youths and maidens) and Tivu Ata Polo (Enchanted, or Enchanted lake) are separated from each other by a crater wall, and the colors of the water in them are green and red, respectively. Kelimutu is very interesting for geologists, because these three lakes have different water colors, but they are located on the crest of one volcano. (Rosino)
5. Crater Lake of the Pinabuto volcano, Luzon, Philippines. Lake Pinabuto is a crater lake on the summit of Mount Pinabuto that emerged after its eruption on June 15, 1991. The lake is located near the borders of the Philippine provinces of Pampania, Tarlac and Zambales. It is the deepest lake in the country at 800 m. It is located about 90 km northwest of the capital, Manila. (nucksfan604 on Flickr)
6. Crater Lake of Zao Volcano, Honshu, Japan. Mount Zao is a complex volcano on the border between Yamagata and Miyagi Prefecture in Japan. It consists of several stratovolcanoes and is the most active volcano in northern Honshu. The group's central volcano includes several lava domes and a tuff cone containing a crater lake called Occama. It is also called the "Pond of Five Flowers" because it changes color depending on the weather. The lake is in a crater formed by volcanic eruption in the 1720s. The diameter of the lake is 360 m, the depth is 60 m. This is one of the main attractions of the region. (Aaron Jarrad)
7. Crater Lake of the Katmai volcano, Alaska, USA. Katmai is a large stratovolcano on the Alaska Peninsula within National park and the Katmai nature reserve. Its diameter is about 10 km, and the parameters of the lake inside are 4.5 x 3 km. It was formed during the 1912 eruption. The maximum elevation of the caldera rim is 2047 m. In 1975, the surface of the crater was at an altitude of about 1286 m, and the bottom - somewhere at 1040 m. The volcano is located on Kodiak Island. (Captain Budd Christman, NOAA Corps)
8. Top of the volcano in the Taal volcano crater lake, Luzon, Philippines. Taal Volcano is a complex volcano on the island of Luzon, Philippines. The lake partially fills the Taal Caldera, which was formed by powerful prehistoric eruptions somewhere between 140,000 and 5380 BC. BC. When viewed from the Tagaytay Ridge, Tal Volcano and its lake are the most beautiful sights of the Philippines. It is located 50 km south of Manila. The lone rock sticking out of the lake is the footprint of an old volcano now surrounded by a 2 km wide lake. This top is now the most big island in an island lake, which is in an island lake, i.e. the tip of a crater lake on Taal Island in Lake Taal, on the island of Luzon. What's incomprehensible? (Junjun Mac1)
9. Crater Lake Deriba, Marra Volcano, Darfur, Sudan. Derib crater - highest point of the Marra volcano at an altitude of 3042 m, in Darfur, in the western part of Sudan. The rim of the caldera has become the new highest point in Sudan since the independence of South Sudan. Its diameter is 5-8 km along the outer edge of the crater. The inner crater is filled with a lake. The Deriba caldera, 5 km wide, was formed by the eruption of the Marra volcano about 3,500 years ago. The volcano is considered dormant, but not extinct, because it still has hot springs and fumaroles. (J Williams)
10. Crater Lake, Ruapehu Volcano, New Zealand. Ruapehu Volcano is an active stratovolcano in the southern part of the Taupo Volcanic Zone in New Zealand. It is located 23 km northeast of Ohakune and 40 km northwest of south coast Lake Taupo, within the Tongariro National Park. Its slopes are the main ski slopes and glaciers of the North Island. Ruapehu is one of the most active volcanoes in the world and the largest active volcano in New Zealand. This is the highest point of the North Island, which includes three peaks: Tahurangi (2797 m), Te Heuheu (2755 m) and Paretitonga (2751 m). A deep active crater is located between the peaks and is filled with a lake. (Adrian Macneil)
11. Crater Lake Yak Loum, Ratanakiri, Cambodia. Yak Loum is a lake and popular attraction in the Ratanakiri province of northeastern Cambodia. The beautiful lake, located about 5 km from the provincial capital of Banlung, occupies a 4,000-year-old volcanic crater. Due to the incredible depth of the lake (48 m), its waters are very clean and transparent. The lake has an almost perfect circular shape (0.72 km in diameter). The lake is surrounded by dense forests, where many exotic birds live. (Ethan Crowley, of Ethan Crowley Productions)
12. Crater Lake Kerid, Iceland. Kerid is a volcanic lake in the south of Iceland, on a popular hiking trail known as the Golden Circle. It is one of several crater lakes in the region known as the Western Volcanic Zone, which includes the Reykjanes Peninsula and the Lungjökull Glacier. The caldera is composed of red volcanic rock. Its depth is about 55 m, width - 170 m, and diameter - 270 m. It is about 3000 years old, it is half the age of the surrounding volcanic formations. While most of the crater has a steep slope with little vegetation, one wall slopes more smoothly and moss grows on it. You can easily go down it. The lake itself is relatively shallow (7-14 m), but thanks to the minerals in the soil, it has a stunning shade. (Progresschrome)
13. Crater Lake Licankabur, Chile. Licancabur is a symmetrical stratovolcano in the southern part of the country, on the border of Chile and Bolivia. The lower three quarters of the northern slope belongs to Bolivia (from 5400 m from the base to 4360 m), and the largest part belongs to Chile. The summit and the crater are located in Chile, its width is about 400 m, and the parameters of the lake inside are 70-90 m. Most of the year, Lake Licankabur is covered with ice. This is one of the highest located lakes in the world, and despite the air temperature, which can reach -30 ° C, there is a planktonic fauna here. (Albert Backer)
14. Geothermal Crater Lake Viti, Askja, Iceland. Askja is a stratovolcano in a remote part of the central highlands of Iceland. The name Askja refers to a complex of several calderas within the Dingyufjödl Mountains, rising up to 1510 m. In Icelandic, askja means “box” or “caldera”. This region can only be reached for a few months a year. It is located in an area of rain shadow, with only 450 mm of rainfall every year. The area was used during the Apollo program test to train astronauts to fly to the moon. Oskewatn - large lake filling most of the small caldera that emerged from the 1875 eruption. Its surface lies about 50 m below the main crater floor and covers about 12 km². When the lake was formed, it was warm, but today it is covered with ice for most of the year. It is the second deepest lake in Iceland (220 m). Viti is a small crater on the northeastern shore of the lake with a diameter of about 150 m. It contains a geothermal lake with mineral-rich water. (Boaworm)
15. Divine Lake, Pektusan volcano, China, North Korea. Divine Lake is a crater lake on the border of China and the DPRK. It lies within the caldera on the Pektusan volcano. It is partly located in Yangando Province, DPRK, and partly in Jirin Province, China. The caldera, where the lake is located, was formed by a major eruption in 969. The surface of the lake is located at an elevation of 2189 m. The lake covers an area of 9.82 km². The average depth of the lake is 213 m, the maximum is 384 m. From mid-October to mid-June, it is usually covered with ice. (Bdpmax)
