Enez Krno Bog Causeway (Île aux Moines–Medreac Moor, Brittany)
Moor of Enez Krno Causeway · Medreac Bog Track · Ille-et-Vilaine Bog Way
Hallstatt C (Iron Age I Armorican)·Armorican Hallstatt (Brittany enclos community)·🇫🇷 Brittany, Ille-et-Vilaine, Médréac basin, Enez Krno moor 12 km S of Dinan, France
About
About Enez Krno Bog Causeway (Île aux Moines–Medreac Moor, Brittany)
Iron Age bog causeway (68 m) in the Enez Krno (Île aux Moines) mire basin 2 km west of Médréac village, Ille-et-Vilaine, Brittany, France—only Armorican bog causeway contemporaneous with Hallstatt world. 6 m) on longitudinal oak beams with hazel hurdle apron at fen edge, dendro 620-580 BCE (Hallstatt C1) and ²⁸C on peat intrusion 580±40 BCE. 9 m peat depth to islet krno (Breton: hillock) with Iron Age enclosure (enclos) 28 m diam of timber palisade and 4 four-posters—settlement island in bog like Eilean Dòmhnuill but Armorican.
Causeway is hillfort-islet access. Threatened by Médréac quarry silage pumping.
Why it mattersOnly Hallstatt Armorican bog causeway–islet parallel to British crannog but Breton; Brittany Hallstatt link.
Open questions
Mysteries & theories
Mysteries
- 01Crannog vs bog causeway typology fit
Theories
- 01580 BCE dendro vs C14 plateau
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.620-580 BCE
- Period
- Hallstatt C (Iron Age I Armorican)
- Culture
- Armorican Hallstatt (Brittany enclos community)
- Builders
- Médréac enclos builders
- Purpose
- Crannog-like fen islet access causeway spanning alder carr to palisaded islet in mire
- Abandoned
- c.400 BCE
- Rediscovered
- 1992 Gomez de Soto Médréac; 2008 Enez Krno pile-dwelling re-study
- Excavation
- Excavated
1992
Gomez de Soto maps Enez Krno causeway 52 m + islet 28 m
2008
Rennes lab peat C14 580±40 seals causeway
On the ground
Structures & features
48.2800° N · 2.0800° W · 68 m · 2 mapped features
Enez Krno Plank-Hurdle Run
trackway52-m transverse alder 1.6-m planks on oak beams with hazel apron
48.2810° N · 2.0790° WEnez Krno Islet Enclos (28 m)
islet28-m palisaded islet with 4 four-posters in mire 2 km W Médréac
48.2790° N · 2.0810° W