Anomalous zone

The Bloop

added30 August 2026

In 1997 hydrophones belonging to the US National Oceanic and Atmospheric Administration recorded an ultra-low-frequency sound in the South Pacific loud enough to be picked up by sensors three thousand miles apart. Its profile resembled a biological one, and for two decades the Bloop was the leading exhibit for anyone who believes in undiscovered giants in the ocean. NOAA settled it in 2012: an icequake, an iceberg fracturing off Antarctica. The sound stopped being a mystery but remains one of the best-known audio files in internet history.

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-53.16257, -70.90782

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Sources

Bloop — Wikipedia

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Cryptid

Nahuel Huapi and Nahuelito

A deep glacial lake in Argentine Patagonia where a creature was described long before Loch Ness: the Mapuche were telling the Spanish about it in the eighteenth century. In 1922 the Buenos Aires zoo announced an expedition to find a plesiosaur and the story went round the world. Nahuelito is described as a humped back some fifteen metres long; there are many photographs and not one convincing.

1343 km away

Anomalous zone

Cerro Uritorco

A mountain in the Argentine province of Córdoba, the main site of UFO pilgrimage in Latin America. In January 1986 a scorched oval some hundred and twenty metres long was found on its slope, and never explained. Local esoteric tradition places a hidden underground city, Erks, inside the mountain. Thousands climb it on New Year's Eve to wait for lights.

2535 km away

Folklore

Lake Titicaca

The highest navigable lake in the world, on the Peru–Bolivia border, from which Inca tradition has Manco Cápac emerging to found their empire. In 2000 an underwater expedition found a stone terrace and a wall some eight hundred metres long on the bed near the Island of the Sun — pre-Inca Tiwanaku construction, now submerged. Offerings are still recovered from the bottom: gold figurines, incense, llama bones.

4154 km away

More: Anomalous zone

Anomalous zone

Bermuda Triangle

A region of the western Atlantic between Florida, Bermuda, and Puerto Rico, associated with unexplained disappearances of ships and aircraft since the mid-20th century.

+21

Anomalous zone

The Valley of Death in Kamchatka

A narrow hollow at the foot of Kikhpinych in the Kronotsky reserve, discovered in 1975: dead animals and birds are found on its floor regularly, and people who linger there become dizzy and weak. The answer was found almost at once and turned out to be chemical — hydrogen sulphide and other gases seep from fissures and pool in the hollow in still weather. The valley is still lethal and closed to visitors, and the name stuck long before the explanation did.

Anomalous zone

The Devil's Settlement near Kaluga

A rock outcrop in the forests of the Kaluga region, wrapped in stories about the devil building it in a single night. The place is interesting without them: goblin's gold moss, which glows in the dark, grows on the stones, and ferns live in the crevices that have no business at this latitude — relicts that survived the ice age in the rocks' microclimate. The botanical anomaly is real, and the explanation for it was found later than the legend was.