🇪🇸 Spain · Megalith
Dolmen de Soto
Late Neolithic to Chalcolithic · Andalusian Chalcolithic / Millares influence
21 m passage dolmen near Huelva with 63 engraved orthostats under 60 m tumulus, 3000-2500 BCE.
🇪🇸 Spain · Ancient city
Atlantis Tartessos Shelf – Huelva Shelf Tartessic Atlantis
Claimed Tartessic Bronze 1000 BCE (rectangle sand ridge Holocene) · Tartessic / Spectral artefact
Huelva shelf Tartessos variant of Doñana rectangle — Hinojos cores show sand ridge not city
🇪🇸 Spain · Ancient city
Tartessos and Doñana – Western Atlantis Hypothesis
Late Bronze to Iron Age Tartessian (1200–550 BCE collapse) · Iberian Tartessian with Phoenician Tartessos emporion + Greek
Arganthonios's Tartessian kingdom Guadalquivir — Doñana marsh 'rings' claimed Atlantis 2011, disproved as salinas.