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Ancient Mystery

Archaeological sites whose construction, purpose, or builders remain debated.

Naga Fireballs

Every October, glowing orbs are said to rise from the Mekong River along the Thailand-Laos border, drawing crowds who credit a giant mythical serpent. Scientists have proposed explanations for decades, none fully satisfying everyone who has seen it.

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Results · 18 mysteries

of 131 in the archive

New Hampshire, United States
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America's Stonehenge
A hillside maze of stone chambers, walls, and a grooved "sacrificial table" in New Hampshire has been called both a 4,000-year-old ceremonial site and a 19th-century farmer's root cellars. A century of argument has not settled it.
Chelyabinsk Oblast, Russia
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Arkaim
Found by accident in 1987 during a dam survey, this circular Bronze Age fortress in the Ural steppe was built with gates and doorways researchers say align to eighteen solar and lunar events, a claim, if accurate, of more precise astronomical design than Stonehenge.
Central Sulawesi, Indonesia
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Bada Valley Megaliths
Scattered across a remote Sulawesi highland valley, more than 400 carved stone figures, some over four meters tall, were made by a culture that left no name, no writing, and no agreed-upon date behind.
Nevşehir Province, Turkey
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Derinkuyu Underground City
An 18-story subterranean city beneath central Turkey, capable of sheltering thousands of people and their livestock, that was lost to modern memory entirely until a homeowner broke through a wall into it in 1963.
Valparaíso Region, Chile
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Easter Island Moai
Monumental stone statues carved by the Rapa Nui people on Easter Island, generally representing ancestral figures, with nearly a thousand standing across the island including the famous restored row at Ahu Tongariki.
Şanlıurfa Province, Turkey
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Göbekli Tepe
A Neolithic archaeological site in southeastern Turkey featuring monumental circular stone enclosures with carved T-shaped pillars dating to roughly 9500 BCE, among the oldest known monumental structures built by humans.
Giza Governorate, Egypt
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Great Pyramid of Giza
The oldest and largest of the three pyramids at Giza, built as a tomb for the pharaoh Khufu around 2560 BCE and the only surviving structure of the Seven Wonders of the Ancient World.
Ohio, United States
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Great Serpent Mound
North America's largest serpent-shaped earthwork stretches a quarter mile along an Ohio ridge. Radiocarbon dating has produced conflicting answers for over a century about which ancient culture actually built it, and when.
South Eastern Region, Malta
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Hal Saflieni Hypogeum
A 5,000-year-old underground necropolis in Malta holds the remains of thousands and a chamber engineered to resonate with the human voice. After its 1902 discovery, every skull pulled from the site with an unusual elongated shape later vanished without explanation.

Naga Fireballs

Results · 18 mysteries

America's Stonehenge

Arkaim

Bada Valley Megaliths

Derinkuyu Underground City

Easter Island Moai

Göbekli Tepe

Great Pyramid of Giza

Great Serpent Mound

Hal Saflieni Hypogeum