O_0_00 — Earth Science & Anomalies: Section Summary

O_2_01 — Volcanism, Supervolcanoes, and Geological Catastrophism

Volcanic eruptions are among the most powerful forces on Earth, capable of altering global climate, triggering mass extinctions, collapsing civilizations, and imprinting themselves on human mythology for millennia. The T

O_2_00 — Geological Tectonic: Subfolder Summary

O_4_02 — Bermuda Triangle & Devil's Sea — Evidence & Explanations

The Bermuda Triangle — a roughly defined area between Miami, Bermuda, and Puerto Rico — became one of the 20th century's most enduring mysteries after a series of popularizations in the 1960s–1970s attributed an unusual

O_4_00 — Surface Anomalies Curiosities: Subfolder Summary

O_3_00 — Water Aquatic Systems: Subfolder Summary

D_1_12 — Chichen Itza — Calendrical Pyramid and Sacred Cenote

Chichen Itza, located in the northern limestone lowlands of the Yucatan Peninsula, Mexico, was one of the largest and most powerful Maya cities during the Terminal Classic and Early Postclassic periods (c. 750–1250 CE).

D_1_07 — Teotihuacan — City of the Gods

Teotihuacan — the name itself meaning "the place where gods were born" in Nahuatl, given by the Aztecs who found the city already in ruins — was one of the largest cities in the ancient world, reaching a peak population

D_1_01 — Göbekli Tepe

Göbekli Tepe (~9600–8000 BCE) in southeastern Turkey is the world's oldest known monumental architecture, predating agriculture, pottery, and settled civilization by millennia. Its T-shaped pillars (up to 5.5m tall, 16 t

D_1_00 — Iconic Megasites: Subfolder Summary

D_0_00 — Sites & Artifacts: Section Summary

D_5_02 — Labyrinth Tradition

The labyrinth appears across virtually every major civilization — from the Egyptian Labyrinth at Hawara (described by Herodotus as surpassing the pyramids) to Knossos, Chartres Cathedral, and Hopi Tápu'at designs. The cl

D_3_04 — Great Wall of China — Engineering, Mythology, and Function

The Great Wall of China is not a single wall but a vast network of fortifications built, rebuilt, and extended over 2,500+ years by multiple dynasties, stretching a combined total of approximately 21,196 km according to

D_3_01 — Serpent Mound & Effigy Mounds

The Great Serpent Mound in Adams County, Ohio is the largest surviving effigy mound in the world at 1,348 feet (411 m), depicting a sinuous serpent with seven undulating curves and an egg-shaped feature at its head. It c

D_3_00 — Americas Africa Asia Sites: Subfolder Summary

D_4_02 — Submerged Structures & Underwater Archaeology

Since the Last Glacial Maximum (~26,500–19,000 BP), global sea levels have risen approximately 120–130 meters, inundating an estimated 25 million km² of formerly habitable land — an area larger than North America. Any co

D_4_00 — Submerged Underground: Subfolder Summary

B_0_00 — Beings & Entities: Section Summary

B_5_09 — The Underworld: Descent Myths and Subterranean Realms

The Underworld — the realm beneath or beyond the living world where the dead reside, spirits dwell, and cosmic forces operate — is among the most universal motifs in human mythology. Virtually every major civilization ha

B_4_00 — Spirit Categories Functions: Subfolder Summary