🇮🇪 Ireland · Megalith
Loughcrew Cairn T (Hag's Cairn)
Late Neolithic · Boyne / Loughcrew passage tradition
35 m Loughcrew chief tomb with cruciform chamber whose art is illuminated by equinox sunrise.
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Tagsequinox
5 places carry this tag, across every kind and continent it appears in.
🇲🇽 Mexico · Ancient city
500 BCE–1542 CE (Preclassic through Postclassic to Contact; apogee CIassical 600–950) · Maya (northwestern Yucatán, Dzibilchaltún polity)
Northern Maya lowland megasite spanning 17 km² (largest in Yucatán by area, 8,400 structures, 1,300 vaulted buildings) occupied extraordinarily from Middle Preclassic 500 BCE to Conquest ~1542 CE…
🇮🇪 Ireland · Megalith
Late Neolithic · Boyne / Loughcrew passage tradition
35 m Loughcrew chief tomb with cruciform chamber whose art is illuminated by equinox sunrise.
🇬🇧 United Kingdom · Megalith
Middle Neolithic (~4000–3500 BCE; medieval chapel atop) · Armorican / Channel Neolithic (Norman Neolithic)
Jersey's paramount Neolithic monument crowns a 12-m artificial mound containing a cruciform passage grave with a 12-m roofed chamber aligned so equinox sunrise illuminates the rear cell.
🇲🇽 Mexico · Pyramid
Terminal Classic to Early Postclassic (Maya-Toltec) · Maya (Itzá) / Toltec-influenced
Stepped pyramid-temple at Chichén Itzá with 365 steps representing solar year; equinox feathered-serpent shadow (Kukulkán) descends balustrade.
🇮🇪 Ireland · Megalith
Neolithic · Boyne Valley Neolithic
Largest passage tomb complex in Brú na Bóinne: Great Mound with two passages (east-west) and 18 satellite tombs.
