Corlea Trackway
Great Bog Road of Corlea · Corlea Raised Bog Road
Iron Age, Late La Tene 148 BCE·Late Iron Age La Tene Ireland·🇮🇪 County Longford, Corlea Bog, Kenagh, Ireland
About
About Corlea Trackway
2 m wide (original 1 km) oak plank road on transverse ash bearers and birch runners, dated dendrochronology to 147 BCE (felling winter 148/147 BCE). 8 m gauge still impressed in planks. 2-m engineered highway across raised bog linking ritual deposit zones; votive iron spearhead and double-headed alder anthropomorphic figure found beside trackway proves ritual association. The road was built in a single year (single-tree dendro synchronism) and abandoned after bog burst within 10 years.
Why it mattersLargest Iron Age timber highway in Europe; single-year build proves centralized labour mobilization; wheeled-rut and votive deposits link transport to ritual.
Open questions
Mysteries & theories
Mysteries
- 01Whether wheeled vs ritual processional primary function
Theories
- 01Bog burst abandonment as hydraulic failure analogy to Marib
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.147 BCE (dendro winter 148/147 BCE) built in one year
- Period
- Iron Age, Late La Tene 148 BCE
- Culture
- Late Iron Age La Tene Ireland
- Builders
- Ulaidh/Gailenga Iron Age communities
- Purpose
- Wheeled highway across raised bog linking ritual deposit zones
- Abandoned
- c.138 BCE bog burst and abandonment
- Rediscovered
- 1984 Bord na Mona peat machine exposure; 1991 Raftery excavation
- Excavation
- Excavated
148 BCE
Felling winter 148/147 BCE single-year build
1984
Bord na Mona exposes oak planks
1997
Raftery completes 1.6 km exposure; visitor centre opens
On the ground
Structures & features
53.6200° N · 7.8500° W · 55 m · 2 mapped features
Central Highway Section
trackway3.2-m wide oak plank deck with 1.8-m wheel ruts
53.6200° N · 7.8500° WVotive Deposit Zone
votiveIron spearhead and alder anthropomorph beside trackway
53.6210° N · 7.8510° W
Gallery