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Tagscontested
15 places carry this tag, across every kind and continent it appears in.
🇦🇷 Argentina · Earthwork
Contested Holocene ambiguous — Holocene to Late Pre-Hispanic hypothesis or natural jointing · Contested Huarpe / Comechingón (?) or natural geofact (unvalidated)
Southern Potrero enigmatic walls — 600 m rectilinear stone line 0.6 m and circular huts 4 m under Chaco vine forest; contested Huarpe vs natural jointing.
🇦🇷 Argentina · Hypothetical site
Hypothetical pre-Hispanic to Historic · Hypothetical Huarpe / Historic Hualtaran pastoral
Hypothetical central causeway on Potrero de la Aguada floor — 800 m pavement amid historic corrals.
🇺🇸 United States · Earthwork
Late Woodland effigy mound period (700–1200 CE) · Late Woodland effigy-mound builders (ancestral Ho-Chunk)
Contested submerged 'pyramids' in Wisconsin lake beside verified Woodland effigy mounds on shore.
🇦🇷 Argentina · Earthwork
Contested Holocene ambiguous — historic to pre-Hispanic hypothesis · Contested Comechingón / Huarpe (?) or natural cuesta (unvalidated)
Northern rim avenue 900 m causeway 1.2 m with bastions 6 m along Potrero norte — contested Huarpe causeway vs cuesta bedding.
🇦🇷 Argentina · Earthwork
Contested Holocene ambiguous — historic to pre-Hispanic hypothesis · Contested Comechingón / Huarpe (?) or natural cuesta (unvalidated)
Northern rim avenue 900 m causeway 1.2 m with bastions 6 m along Potrero norte — contested Huarpe causeway vs cuesta bedding.
🇦🇷 Argentina · Hypothetical site
Hypothetical pre-Hispanic to Historic · Hypothetical Huarpe / Historic pastoral
Hypothetical eastern ridge outlier above Potrero — 600 m wall and 6 m circles as pircas.
🇵🇪 Peru · Megalith
Late Intermediate pre-Inca hypothetically Chachapoya fringe or colonial hypothesis Late Intermediate contested · Chachapoyas fringe / possibly 19th c. coffee retaining (unvalidated)
Megalithic andesite wall 80×3.2 m on Caynarachi terrace 1100 m — polygonal dry coursing with chamfer notch, terrace 40×30 m, ware 800–1400 CE.
🇵🇹 Portugal · Submerged site
Portolan chart phantom (1424–1508 CE) · Portuguese–Venetian cartography / Phantom
Azores Satanazes phantom 1424 – Devil archipelago at 33.5°N 29°W, no bank, pure chart error.
🇨🇱 Chile · Submerged site
Buccaneer phantom (1687–1770) · English buccaneer / French hydrography
Chile Davis phantom 1687 – sandy isle at 27°20′S 105°W, abyssal Nazca plain, precursor to Easter Island.
🇵🇹 Portugal · Submerged site
Portolan phantom (1435–1492) · Genoese–Portuguese cartography
Northern Antillia variant at 38°N 35°W – 150 km rectangular Seven Cities duplicated northward.
🇻🇪 Venezuela · Earthwork
Late Pre-Columbian to modern hypotheses contested Late Intermediate (?)/1930s (?)? · Pemón / Wayaka? / miner (contested)
Tepui foot earthen mound 6 m and 45 m dry wall at Kukenán 1350 m — Pemón dyke vs landslide hummsock vs miner claim, 1200 CE Wayaka ware scatter.
🇩🇪 Germany · Megalith
Natural Cretaceous (85 Ma); human modification medieval, hypothesized pre-Christian · Natural geology; medieval Christian hermitage; contested Germanic cult
Teutoburg Forest sandstone pillars with carved grottoes and medieval relief, debated as Germanic solar sanctuary.
🇯🇵 Japan · Megalith
Geological: Early Miocene sandstone (20 Ma) formation; if artificial, claimed Jomon or earlier (10,000–2000 BCE) · Disputed – natural geology vs hypothetical Jomon / lost Pacific civilization
Submerged sandstone formation off Yonaguni Island discovered 1986 featuring stepped terraces up to 27 m high, flat surfaces and apparent right angles at 25–30 m depth, extending ~150×40 m.
🇮🇳 India · Submerged site
Late Harappan to Historical (maybe 1500 BCE onward; claimed 3500 BCE) · Harappan(?) / Historical Hindu
Ancient sacred city of Krishna described in Mahabharata, being searched offshore Bet Dwarka and Gulf of Khambhat.
🇮🇩 Indonesia · Megalith
Late prehistory to early classical; accepted 2000 BCE–1500 CE oral claims; controversial Pleistocene claim 25,000 BCE · Austronesian / Sundanese prehistoric; possibly pre-Hindu Javanese
Stepped hilltop punden berundak (terraced pyramid) with five basalt column terraces, retaining walls and standing stones covering 150×45 m at 885 m elevation; upper structures dated 45 BCE–22 CE,…
