Vilabouly (Sepon Copper Belt)
Vilabouly Copper Production Complex · Sepon Vilabouly · Chrysolite Vilabouly
Bronze Age copper 2000 BCE–500 CE (Sepon culture) → Iron Age·Sepon Copper culture (Vilabouly Bronze, Truong ceramic? → Iron Age Laotian)·🇱🇦 Savannakhet Province, Vilabouly District (Sepon–Vilabouly valley, Annam Cordillera foothills, 30 km east of Savannakhet–Sepon road, 500 km east of Vientiane), Laos
About
About Vilabouly (Sepon Copper Belt)
2000 BCE–700 CE) in the Vilabouly–Sepon valley of Savannakhet, Laos — 30 km copper smelting corridor excavated 2006–14 by Franco-Lao mission (Pryce, Pigott, Cadet) showing Southeast Asia's only known prehistoric copper mine with shaft mining (Peun Baolo mine) and Phu Khao Thong foundry. Vilabouly was the copper source for Ban Chiang (Thailand) and Ban Non Wat bronze (1600 BCE) via Isan river portage, with ore-to-ingot chain from native copper shaft 20 m deep to bivalve mould and slag heap 15 ha, then Iron Age slag layer 500 BCE.
Sepon gold/copper today overlies it; predates Phu Lon (Thailand) and Non Pa Wai sources proving early mainland SEA autonomous copper.
Why it mattersOnly known prehistoric copper shaft mine in SE Asia (2000 BCE) — Vilabouly as the Bronzen source for Ban Chiang's short vs long chronology, proving SEA autonomous bronze before Chinese.
Open questions
Mysteries & theories
Mysteries
- 01Was Vilabouly tin also from Sepon or Khao Sam Kaeo?
Theories
- 01Vilabouly → Isan maritime via Mekong as Bronze Belt before maritime tin
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.2000 BCE earliest Peun Baolo shaft mining; foundry 1600 BCE
- Period
- Bronze Age copper 2000 BCE–500 CE (Sepon culture) → Iron Age
- Culture
- Sepon Copper culture (Vilabouly Bronze, Truong ceramic? → Iron Age Laotian)
- Builders
- Annam Cordillera bronze miners-smiths (Laotian Copper Belt people)
- Purpose
- Primary SEA copper mine supplying Isan–Mekong bronze drums and Ban Chiang industry
- Abandoned
- c.700 CE (Chenla → Khmer shift, modern mine reuses)
- Rediscovered
- 2005 LanXang Minerals Au/Cu mine EIA; 2006–14 Pryce excavations
- Excavation
- Partially excavated
c.2000–1600 BCE
Peun Baolo shaft 20 m with hammer stones and wood shuttering
c.1600 BCE–500 CE
Phu Khao Thong foundry 15 ha slag, bivalve axe moulds, ingot to Isan
2006–14
Franco–Lao mission proves Vilabouly as BA source for Isan bronze
On the ground
Structures & features
16.9500° N · 106.3500° E · 260 m · 2 mapped features
Peun Baolo Mine Shaft
mine20 m deep shaft with hammer stones and wood shuttering (2000 BCE mine)
16.9505° N · 106.3505° EPhu Khao Thong Foundry Slag Heap
industrial15 ha slag heap and bivalve mould scatter on Vilabouly hill (1600 BCE)
16.9495° N · 106.3495° E