Fact check: Lake Natron in Tanzania is so alkaline it calcifies animals, but flamingos thrive there.

Verdict: mostly true — Trust Score 75/100

The TikTok post presents a visually engaging compilation of natural wonders, and most of its claims about these locations are accurate, such as Lake Natron calcifying animals while flamingos thrive, Salar de Uyuni acting as a giant mirror, and Caño Cristales displaying five colors. However, the claim that Ijen Volcano's blue lava is found in only two places on Earth is an exaggeration, as it is the largest blue flame area in the world, but not necessarily one of only two. Additionally, the framing that "scientists won't discuss these places" is misleading, as there is extensive scientific research and understanding of these phenomena. The video footage appears to be authentic. confirmed by 6 sources.

mostly true verification card — Trust Score 75/100
Platform
tiktok
Source author
unknownshorizons — see all fact-checks of this account
Original post
https://www.tiktok.com/t/ZTS3hMoNj/
Verified on
July 16, 2026
Verification ID
StwPhUh73rEKFXHMOq_Y4w

Original content reviewed

Platform: TIKTOK Author: @unknownshorizons --- Caption/Description --- Scientists Won't Discuss These Places😱🌏🤯 #sciencecannotexplain #mysteryplaces #unexplained #travelbucketlist #naturalwonders 🪨 Lake Natron 🇹🇿 Turns animals to stone. Flamingos survive. Why? 🌋 Ijen Volcano 🇮🇩 Blue lava. Only 2 places on Earth. 🪞 Salar de Uyuni 🇧🇴 Giant mirror. Pilots crash. No depth. ⭕️ Fairy Circles 🇳🇦 Millions of circles. No grass. No answer. 🌈 Caño Cristales 🇨🇴 River of 5 colors. Only weeks a year. 💗 Lake Hillier 🇦🇺 Pink water. Lab failed to recreate it. Which one fascinates you the most? ❤️ Like if nature amazed you 💾 Save for your bucket list 💬 Comment the one you want to visit 📤 Share with a curious mind DM for credit or removal request (no copyright intended for background footage and music) © All rights and credits reserved to the respective owners. --- Audio Transcript (What was said) --- Scientists have a list of places they won't discuss. These are on it. 1, Lake Natron, Tanzania. Water so alkaline it calcifies animals. They turn into stone. But flamingos thrive here. Why only them? Science doesn't know. 2, Eigen volcano, Indonesia. Blue lava pours down this mountain at night. Only two places on earth have this. The cause still debated. 3, Salar de Uyuni, Bolivia, the world's largest salt flat. After rain, it becomes a giant mirror. Sky and ground become one. You lose all sense of depth. Pilots have crashed here. They thought they were flying into clouds. Four, fairy circles, Namibia. Millions of perfect circles stretch for miles. No grass grows inside. Scientists argued for decades. Still no single explanation. 5, kanyochristales, Colombia, a river that turns red, blue, yellow and green, but only for a few weeks a year. Why those exact colors? Why only here? Unanswered. 6, Lake Hillier, Australia, Bubblegum, pink water. Scientists isolated the algae. They tried to grow it in a lab. The water stayed clear. Something else makes it pink. --- On

Claims analyzed (7)

  1. verified: Lake Natron in Tanzania is so alkaline it calcifies animals, but flamingos thrive there.
    Lake Natron is known for its extreme alkalinity (pH up to 10.5) and high salt concentration, which can calcify animals that die in its waters. Despite these harsh conditions, it is a vital breeding ground for lesser flamingos, who have adapted to the environment.
  2. misleading: Ijen Volcano in Indonesia produces blue lava, a phenomenon found in only two places on Earth.
    Ijen Volcano is known for its 'blue fire' phenomenon, which is caused by ignited sulfuric gas, not blue lava. This gas emerges from cracks at high temperatures and can reach several meters high. While it creates the impression of blue lava, it is a combustion of sulfuric gas. Ijen is considered the largest blue flame area in the world, but the claim that this phenomenon is found in only two places on Earth is an exaggeration.
  3. mostly true: Salar de Uyuni in Bolivia is a giant mirror and pilots crash due to no depth perception.
    Salar de Uyuni, the world's largest salt flat, transforms into a giant natural mirror during the rainy season (December to April) when a thin layer of water covers its surface. This creates an optical illusion where the sky and earth merge, making it difficult to perceive depth. While the mirror effect is real and can be disorienting, there is no widespread evidence of pilots crashing specifically due to this phenomenon at Salar de Uyuni. One source mentions a Bolivian Air Force C-130 crash in 2
  4. mostly true: Fairy Circles in Namibia are millions of circles with no grass and no answer for their existence.
    Fairy Circles are indeed millions of bare patches of soil surrounded by rings of grass found in the Namib Desert. While their exact cause has been debated for decades, recent research strongly suggests that they are formed due to plant competition for scarce water resources in the arid environment, or a combination of termite activity and water competition. So, while the 'no answer' part is an exaggeration, the phenomenon itself is real and has been a long-standing scientific puzzle.
  5. verified: Caño Cristales in Colombia is a river of 5 colors, visible only weeks a year.
    Caño Cristales, also known as the 'River of Five Colors' or 'Liquid Rainbow,' is a natural wonder in Colombia. Its vibrant hues (red, yellow, green, blue, and black) are due to the endemic aquatic plant Macarenia clavigera. The most vibrant colors are typically visible from June to November, with peak viewing months often between September and November, making it a seasonal spectacle.
  6. mostly true: Lake Hillier in Australia has pink water, and labs failed to recreate it.
    Lake Hillier in Western Australia is indeed known for its distinct pink color, which is caused by salt-loving microorganisms and algae. While the lake's color is a natural phenomenon, the claim that labs failed to recreate it is not explicitly supported by the provided search results. Some sources indicate that the color can fade due to heavy rainfall diluting the salinity, but the underlying microbial processes are understood.
  7. unverifiable: Scientists won't discuss these places.
    This is a sensationalist statement used to create intrigue. The existence of numerous scientific articles and travel guides discussing these locations, as found in the search results, refutes the idea that scientists 'won't discuss' them. The claim is an opinion and not a verifiable fact.

Sources consulted (22)

Related verifications

AI-generated analysis. Not a substitute for professional fact-checking.