Only standing water areas can be deadly

Water is an indispensable part of life. However, many waters are so dangerous that it is best to stay away.

Rio Tinto, Andalusia, Spain : Rio Tinto has a large amount of by-products from heavy metal mining and acid.From 3000 BC, the area around the river was exploited gold, silver, copper and many other precious minerals.(Photo: Prefijos-telefonicos).

As a result, the water has vivid colors stretching 100 km, pouring into the Gulf of Cadiz.River water is too dangerous for humans, but it is the habitat of many bacteria that can survive in a toxic environment and do not need oxygen.(Photo: W-dog).

Lake, Dominica : Just the second largest natural hot spring in the world, but the Dominican Lake has the highest temperature.Located in Desolation valley, Boi lake water reaches 82-92 degrees C. (Photo: Rumshopryan).

That's just the heat of the coastal water, no one has come to the lake center to measure the temperature.This unique phenomenon is due to the volcanic pockets in the area.(Photo: Gopixpic).

Blue Lagoon, Derbyshire, England : This is an old quarry that has been flooded.This area is a strange green color due to toxic chemicals released from the rocks.The lake has a pH of 11.3 (the pH of ammonia is 11.5 and that of bleach is 12.6).(Photo: Cbforum).

In addition, water contains garbage, feces and animal carcasses.The lake was dyed black several times to prevent visitors from taking a bath, but then the water still returned to the old green color and many people took the risk of going down to swim here.(Photo: Daily Mail).

Lake Horseshoe, California, USA : This lake in Mono county has CO2 and H2S, an extremely toxic mixture that not only kills an area of ​​large trees around but also causes people to lose their lives.In 1998, lake air killed a 58-year-old climber, and in 2006, gas killed three patrolmen of the ski area.This toxic gas comes from underground volcanoes scattered throughout the region.(Photo: Summitpost).

Lake Mono, California, USA : This is one of the most ancient and dangerous lakes in America.The lake water has 3 times the salt content of seawater and the pH is 10. (Photo: Mycoolbackgrounds).

This gives the lake impressive salt columns, but quite dangerous.There are only shrimp, flies and a live algae.The danger of the lake depends on the water level.(Photo: Tabletwallpapers).

Lake Kivu, Africa : Located between Rwanda and Congo, Lake Kivu contains a large amount of methane and CO2 below.Currently this gas is not dangerous, but with many volcanoes in the area, Kivu is like a timed bomb, threatening the lives of millions of people in the neighborhood.A strong explosion or shock can cause these gases to escape.(Photo: Technologyreview).