RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
206 results for "megalithic site" — page 10 of 11
D_3_17 — Sanchi Stupa and Buddhist Monumental Architecture
Sanchi — a hilltop complex near the town of Sanchi Nagar in Madhya Pradesh, central India — is the finest surviving ensemble of early Buddhist monumental architecture and one of the most important Buddhist pilgrimage and
D_3_09 — Mohenjo-daro and Harappan Urban Planning
Mohenjo-daro ("Mound of the Dead" in Sindhi) — located in present-day Sindh province, Pakistan — is the largest and best-preserved urban center of the Indus Valley Civilization (IVC), one of the three great Bronze Age ci
D_3_13 — Aksum Stelae: Ethiopian Monumental Engineering
Aksum (also Axum) — a city in the northern Ethiopian highlands (Tigray Region) — was the capital of the Aksumite Kingdom (c. 1st–7th centuries CE), one of the most powerful and sophisticated states of the ancient world,
D_3_22 — Great Serpent Mound: Astronomical Analysis and Cultural Context
The Great Serpent Mound is a 411-meter-long (1,348 ft) serpentine effigy earthwork in Adams County, Ohio, situated on a plateau overlooking Brush Creek — the largest surviving effigy mound in the world. The mound takes t
D_3_16 — Jericho: Oldest Walled Settlement and Neolithic Revolution
Jericho (Arabic: Arīḥā; Hebrew: Yeriḥo; modern Tell es-Sultan) — an ancient settlement mound beside the perennial spring of Ain es-Sultan in the southern Jordan Valley, approximately 10 km north of the Dead Sea and 258 m
D_3_23 — Mohenjo-Daro: Unsolved Mysteries of the Indus Metropolis
Mohenjo-Daro (Sindhi: "Mound of the Dead") — located in the Larkana District of Sindh, Pakistan, on the right bank of the Indus River — was one of the two largest cities (alongside Harappa, ~600 km to the north) of the I
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_10 — Derinkuyu and Cappadocian Underground Cities
Derinkuyu — the deepest known underground city in Cappadocia, central Turkey — extends approximately 85 meters (280 feet) below the surface across 18 recognized levels (8 fully excavated and open to visitors), with the c
D_3_08 — Çatalhöyük: Neolithic Urbanism and the Origins of Settled Life
Çatalhöyük is a Neolithic and Chalcolithic settlement located on the Konya Plain of central Anatolia, Turkey, occupied from approximately 7500 to 5700 BCE. At its peak the site housed an estimated 3,000–8,000 inhabitants
D_3_18 — Great Zimbabwe Trade Network Expansion
Great Zimbabwe — the largest stone structure in sub-Saharan Africa south of the Sahara — was the capital of a Shona-speaking state that controlled the gold-for-cloth trade between the Zimbabwe Plateau and Indian Ocean po
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_14 — Rock-Hewn Churches of Tigray: Beyond Lalibela
While Lalibela's eleven rock-hewn churches are world-famous, a far more extensive but less-known tradition of rock-cut church architecture extends across the Tigray Region of northern Ethiopia (and neighboring Eritrea) —
D_3_02 — Paracas Trident, Candelabra, and Cross-Cultural Trident Symbolism
The Paracas Candelabra (also called "Candelabro de Paracas" or "the Trident") is a massive geoglyph carved into the sandy hillside of the Paracas Peninsula on Peru's southern coast, overlooking Pisco Bay. Measuring ~180
D_3_11 — Sigiriya: Sri Lankan Sky Fortress and Water Gardens
Sigiriya ("Lion Rock") — a massive column of volcanic rock rising approximately 200 meters (660 feet) above the surrounding plains in the central Matale District of Sri Lanka — is one of the most dramatic archaeological
D_3_06 — Terracotta Army — First Emperor's Eternal Guard
The Terracotta Army is a collection of approximately 8,000 life-sized clay soldier figures, 130 chariots, 520 chariot horses, and 150 cavalry horses buried in three major pit complexes adjacent to the mausoleum of Qin Sh
D_4_03 — Ancient Tunnels, Erdstall, and Subterranean Networks
Humanity has dug, carved, and inhabited subterranean spaces for thousands of years — from the vast underground cities of Cappadocia (Derinkuyu, 8+ levels deep, housing up to 20,000 → [D_4_01](D_4_01_Underground_Cities_an
D_4_07 — Underwater Ruins of Dwarka: Submerged Indian City
Dwarka (also Dvaraka or Dwaraka) — a modern city on the western tip of Gujarat's Saurashtra Peninsula, India, fronting the Gulf of Kutch and the Arabian Sea — is revered in Hindu tradition as the legendary kingdom of Lor
D_4_09 — Cenotes: Maya Sacred Wells, Karst Hydrology, and Underworld Cosmology
Cenotes (from Yucatec Maya dz'onot or ts'onot) are natural sinkholes formed by the dissolution and collapse of limestone bedrock in the Yucatan Peninsula, exposing the vast underground freshwater aquifer beneath. Over 6,
D_4_06 — Lascaux Cave: Paleolithic Art and Astronomical Interpretation
Lascaux Cave — located in the Vézère Valley near Montignac in the Dordogne region of southwestern France — is one of the most celebrated Paleolithic painted caves in the world. Discovered on September 12, 1940, by four t
D_4_01 — Underground Cities and Myths
Over 200 underground cities have been discovered in Cappadocia alone, with Derinkuyu extending 18 stories deep and capable of sheltering 20,000 people. Major recent discoveries include the Midyat underground city (2020),
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