Late Iron Age Celtic archaeological culture, named for the type-site on Lake Neuchâtel, that succeeded Hallstatt without a cultural break and spread its distinctive curvilinear art style across Gaul, the Alps, and Central Europe under Mediterranean (Greek/Etruscan/Golasecca) influence.
Absorbed piecemeal into the expanding Roman world as Rome conquered Gaul (50s BC), Noricum/Raetia, and Britain; La Tène-derived material culture persists in outlying areas (Ireland, parts of Britain) into the 1st century AD.
The atlas holds 2 border frames for La Tène Culture — the shape you scrub through changes in 450 BC · 389 BC.
Standard synthesis of Hallstatt/La Tène Celtic Europe, archaeology and historical sources together.