Mysteria
Verified53.7450° N · 7.8600° W · 48 m

Derryoghill Trackway – Edercloon Wooden Platform (Longford)

Derryoghill Togher · Edercloon Platform

Early Medieval (Early Christian Ireland)·Early Medieval Irish (Uí Briúin)·🇮🇪 Leinster, County Longford, Derryoghill bog, Edercloon north, Ireland

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About

About Derryoghill Trackway – Edercloon Wooden Platform (Longford)

An Early Medieval wooden platform and adjoining 850-m alder causeway (680–800 CE dendro) in Derryoghill bog, northernmost element of the Edercloon bog road palimpsest distinct from Clonbrin Causey 7 km south. The platform is a 12 x 8 m brushwood and plank island in raised bog linked by the causeway to mineral soil, associated with iron smelting slag and crucible fragments indicating bog-edge industrial transport. Excavated 2007–2009 during the same N4 bypass as Clonbrin, the alder–hazel trackway shows early medieval continuity of Irish bog road architecture after the Iron Age hiatus. Preservation includes leather shoes and wooden bowl in platform silts.

Why it mattersRare early medieval bog road showing post-Roman continuity of Irish togher technology.

Open questions

Mysteries & theories

Mysteries

  1. 01Iron smelting on bog island

Theories

  1. 01Monastic bloomery fuel access

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.680 – 800 CE
Period
Early Medieval (Early Christian Ireland)
Culture
Early Medieval Irish (Uí Briúin)
Builders
Connacht early medieval iron workers
Purpose
Bog crossing to raised platform and smelting site
Abandoned
c.900 CE
Rediscovered
2007 NRA Edercloon north extension
Excavation
Excavated

  1. 680 CE

    Alder causeway felling (dendro)

  2. 2007

    Excavation with slag and medieval leather

On the ground

Structures & features

53.7450° N · 7.8600° W · 48 m · 2 mapped features

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