1 Lake Nyos, Cameroon
Lake Nyos in Cameroon is infamous for its deadly past. This crater lake sits on a volcanic plain, and beneath its waters lies a massive reservoir of carbon dioxide (CO2). In 1986, a natural disaster occurred when a sudden release of CO2 created a deadly cloud that suffocated over 1,700 people and livestock in nearby villages.
Efforts have been made to reduce the gas levels in the lake, but it remains a ticking time bomb. Anyone near it must stay alert to the potential dangers lurking below.
2Lake Natron, Tanzania
Lake Natron in Tanzania may look otherworldly with its red waters, but its beauty hides extreme danger. This alkaline lake is one of the harshest environments on Earth due to its high levels of sodium carbonate and its scorching surface temperatures, which can reach up to 60°C (140°F).
The lake’s waters are so acidic that they can burn the skin and eyes of animals that come into contact with it. Despite this, some species, like flamingos, thrive here, using it as a breeding ground.
3 Boiling Lake, Dominica
Boiling Lake in the Caribbean island of Dominica is exactly as it sounds—it’s a constantly boiling lake. Located in Morne Trois Pitons National Park, this natural wonder is heated by volcanic activity beneath the surface.
The water temperature is so high, ranging from 80°C to 100°C (176°F to 212°F), that falling in would be fatal. Visitors can hike to the lake but are advised to stay at a safe distance to avoid the scalding steam and slippery rocks.
4 Lake Karachay, Russia
Lake Karachay in Russia is considered one of the most polluted places on Earth. During the Soviet era, it was used as a dumping site for nuclear waste. The radiation levels are so high that standing near the lake for an hour can be lethal.
Although the lake has been filled with concrete to reduce radiation exposure, it is still an environmental hazard and a stark reminder of the dangers of nuclear contamination.
5 Horseshoe Lake, California, USA
Horseshoe Lake, located near Mammoth Mountain in California, may seem harmless but poses a hidden danger. The soil around the lake releases high levels of carbon dioxide due to volcanic activity.
The CO2 levels are so concentrated that they can suffocate trees and pose a risk to humans. Signs around the lake warn visitors to avoid lingering for too long in certain areas.
6 Lake Kivu, Rwanda, and Congo
Lake Kivu is another African lake with a dangerous secret. This massive lake lies on the border between Rwanda and the Democratic Republic of Congo. Beneath its surface are vast quantities of methane and CO2.
If disturbed, these gases could trigger a catastrophic explosion, endangering millions of people living in the surrounding areas. Efforts are underway to extract methane for energy use, but the risk remains.
7 Blue Lake, Russia
Blue Lake, located in the Caucasus region of Russia, is known for its mysterious depths. It is one of the deepest karst lakes in the world, plunging over 250 meters (820 feet). What makes it dangerous is the lack of visibility and unpredictable underwater currents.
The lake has claimed the lives of many divers, making it a challenging and risky destination for underwater exploration.