10. Gafsa Lake, Tunisia
Pretty early on in life, most of us learn that things don’t just appear from nowhere. Apparently, Gafsa Lake in Tunisia never got the memo. One day in 2014, a group of Tunisian shepherds were making their way to a familiar patch of land. Imagine their surprise when they got there and found a giant freaking lake where their meadow used to be. A lake that just happened to be the most-inviting shade of azure.
Although Gafsa Lake started out a cool, inviting blue, it quickly became full of algae, and possibly toxic to humans. Not that that stopped locals from bathing in it. In the heat of Tunisia, even a lake full of green sludge is better than no lake at all.
9. Roopkund Lake, India
There are certain things you never want to find in any body of water. Piranhas is one. The decaying remains of hundreds of humans who’ve died a terrifying death is another. Yet that’s exactly what British troops found in Roopkund Lake in the winter of 1942.
It being wartime and all, the Brits naturally assumed that they were at the scene of a Japanese massacre. The truth was far, far stranger. When the bones were examined, it turned out that they all dated to around 850 AD. On top of that, they’d all been killed in a similar way: with a blow to the head that cracked their skulls. The injury matched no known weapon. So what could have caused 200 people to die in this way? The eventual answer scientists came up with was hailstones. Really, really big hailstones.
8. Lake Nyos, Cameroon
Picture the scene. You arrive home from a weekend away, to find your neighborhood full of corpses. Bodies lie in the streets, an expression of fright etched on their dead faces. You wonder what could have killed all these people. Was it a terrorist attack? A virus? The answer could be even weirder. They could’ve been killed by a nearby lake.
In 1986, this is exactly what happened in Cameroon. As locals lay in bed, Lake Nyos quietly released a gigantic bubble of CO2, like the Earth was exhaling. The effect was immediate and horrific. A cloud of deadly gas settled over the region, suffocating anyone in its path. Up to 25 kilometers away, people and animals suddenly fell to the ground, coughing and gasping for air. Flames extinguished. Children died in seconds. Within minutes, 1,746 people and 3,500 animals had died. Entire villages had been wiped out. It remains one of the world’s weirdest natural disasters.
That it happened at all is down to sheer bad luck. Lake Nyos was formed from a CO2 rich volcanic crater. While similar crater lakes usually released small doses of CO2 over a long period of time, Nyos was so freakishly still that the gas became trapped. It wasn’t until something – a landslide, a heavy rainstorm on one side of the lake – agitated the water that its deadly payload was released, ending nearly two thousand lives.
7. Lake Peigneur, Louisiana
Unlike Lake Nyos, we know for certain what caused the freakish Lake Peigneur disaster. Texaco were drilling for oil when they accidentally punctured the roof of a mineshaft below the lake. Not that knowing the cause makes what happened next any less bizarre or terrifying.
The collapse of the mineshaft created a whirlpool. A whirlpool that became a powerful vortex. A vortex that grew and grew until it became the biggest, scariest sinkhole in human history.
The entire lake was sucked down into a swirling mess of mud and terror. The drilling platform was pulled in. 11 barges on the lake at the time went under. Landslides started, bringing surrounding forest and countryside tumbling down into the sinkhole. The canal flowing out the lake actually reversed, pulling the Gulf of Mexico up into the former-lake. Imagine pulling the plug out your bathtub and having not only your entire house, but half your neighborhood go swirling down the drain. That was Lake Peigneur.
Incredibly, this muddy vortex of horror didn’t kill a single human being. 50-odd people all managed separate, miraculous escapes from what should have been certain death.
6. Baotou Toxic Lake, Inner Mongolia
The lake at Baotou, China, is so new that it doesn’t have a real name. Instead, reports simply refer to it as the ‘Baotou toxic lake’. That the word ‘toxic’ is in its title should be telling enough. Baotou is a manmade lake, created by the mining and refining processes that give us the minerals to power our shiny iPhones. As such, it is one of the most-polluted lakes anywhere on Earth.
Coming face-to-face with it is like stepping into a dystopian nightmare. The surface is almost entirely black, a giant swathe of sludge that’s unremittingly bleak. Nothing can grow here. The shores are all dyed as black as the lake itself. The result is a nightmarish, monochrome world. A place that’s as surreal to set eyes on as it is horrifying.
Perhaps the strangest part of the Baotou Lake is why it exists. Most modern technologies use specific minerals in their running, such as cerium, which gives us touchscreens on our phones. Many of these minerals are also used in ‘green’ technologies, like wind turbines. Minerals for such technologies are one of Baotou city’s biggest exports. That’s right: Perhaps the most-polluted lake on Earth was created thanks to our love of eco-friendly tech.
5. Lake Natron, Tanzania
It sounds like something out of a fairy tale, or maybe some haunting Disney story. A lake that magically turns anything that touches its surface into a frozen statue. Yet Lake Natron in Tanzania is far from being fictional. Hidden deep in east Africa, it is surrounded by the creepy stone statues of animals that strayed too close to its deadly waters.
Of course, Lake Natron isn’t magical, or cursed, or anything like that. Instead, its waters are filled with natron, a naturally-occurring compound that contains a lot of sodium carbonate, and a bit of sodium bicarbonate. They’re also dangerously hot and have an alkalinity of around pH 10. The result is that anything that tries to drink from the lake usually dies, quickly, and gets immersed in the waters. The natron then does its thing, calcifying the bodies and essentially turning them into stone.
For visitors, it represents a spectacularly horrible sight. All around the lake are dead statues, often of birds that died when attempting to land on the water’s surface. As a result, visiting is like walking through the most-gruesome department store in history, one where all the mannequins used to be living things.
4. Kawah Ijen Crater Lake Java, Indonesia
At first sight, Kawah Ijen Crater Lake in Indonesia looks almost inviting; the kind of lake you’d like to take home to meet your folks. But this sky-blue lake at the top of a volcano has a fiery underbelly… literally. The whole thing is so full of sulphur that it periodically bursts into neon-blue flames that are both hypnotic to look at, and so deadly that even getting close can cause you to keel over and die from inhaled fumes.
The craziest part of this weirdo lake? Some people actually choose to work here, dodging streams of flickering blue fire to mine chunks of Sulphur from the volcano itself.
3. Pitch Lake, Trinidad
Pitch Lake may have the most-apt name of any lake on Earth. It is a lake made entirely from pitch asphalt, the same stuff we use to surface roads and so-on. You better believe the result is weird. Pitch Lake is so thick in places that you can walk across it… and so dangerously-thin in others that you can slip through its surface, vanishing forever into the murky depths below.
Word to the wise if you’re planning a visit: While some tourists brave the lake’s clearer waters for a swim, this is about as dangerous as the idea of swimming in pitch sounds. Don’t say we didn’t warn you.
2. Lost Lake, Oregon
As we saw with Gafsa Lake, it is possible to have a lake just spontaneously appear from nowhere. But what about one that disappears? Lost Lake in Oregon is such a lake. Every summer, the nine-foot deep, 85-acre lake quietly vanishes. Every fall, it reappears again, as if nothing ever happened.
We don’t mean ‘most of it dries up’ or anything. It utterly vanishes. In its place, a pretty little meadow appears that has no trace of water in it at all. The reason this happens: Lava tubes.
Lava tubes are… well, tubes in rock that are left over from ancient lava flows. They can be less than a foot across, or big enough to walk into. There are two small ones in Lost Lake, constantly draining water off from the surface, ensuring the lake doesn’t flood in winter. In summer, however, the streams that feed Lost Lake dry up. As a result, the lava tubes completely drain the lake dry, until the fall rains come and the two little tubes can no longer keep up with all the water flowing in, and the lake reappears.
1. Yellowstone Lake, USA
Literally everybody reading this has heard of Yellowstone Lake. Famously vast, calm, and beautiful, it’s about as far from a ‘strange’ lake as you’re likely to get. At least, it is on the surface. Go diving in its placid depths, and you might just notice an odd dome growing on the bottom. This is the current topmost point of what’s been termed the Yellowstone Supervolcano. One day it’s gonna burst. When it does, you can say goodbye to life as we know it.
Think of the lake as your teenage face, and the dome as a gross little spot that’s just starting to swell under the skin. Over time, that spot is gonna swell up and up and up, until it’s ripe and ready to pop. Only it won’t be a little jet of pus that comes out. Instead, the bottom of Yellowstone Lake leads into a gigantic magma chamber that contains enough lava to fill the Grand Canyon more than 11 times over.
If it one day erupted, it would be a catastrophe. Although a relatively-small number would die for such a gigantic blast (estimated in the region of 90,000), the Midwest would be buried under a layer of ash, and massive crop failures would plague the US for the next decade or so. If you thought Lake Nyos up there was deadly, just wait till Yellowstone Lake blows.