Tra na mBo and Bunmahon Head

Outline Geosite Description
The site comprises a rocky headland and Trawnamoe beach to the west.

Geological System/Age and Primary Rock Type
The rocks of Bunmahon headland are Devonian age sandstones and conglomerates. The adjacent rocks in the bay to the west are Ordovician volcanic and sedimentary rocks.

Main Geological or Geomorphological Interest
Mining heritage is highly visible in the bay with small adits cut into the rocks. The volcanic lavas at the western end of the Trawnamoe beach show very interesting features, which are called peperitic intrusion. When andesite lava was being injected into wet sediments, it broke up into rounded blobs and was extensively altered by hot fluids.

The headland of Bunmahon Head is composed of Devonian age red sandstones and conglomerates. These are tilted to vertical and form impressive cliffs. A fault runs to the west of the headland separating them from the Ordovician rocks.

Site Importance
The site is part of the complex of sites along the Copper Coast, which collectively are of national importance and which are already part of a proposed NHA (Ballyvoyle Head to Tramore No 1693).

Access and Safety
Accessable via a cliff top track from Bunmahon, and a path onto the headland or down into the bay via a hand rail assisted slope.

About Copper Coast Geopark

The Copper Coast Geopark is in Co. Waterford, Ireland and is an outdoor museum of geological records; it stretches along the coast from Kilfarassy Beach, near Fenor in the east to Ballyvoile Beach near Stradbally to the west. Volcanoes, oceans, deserts and ice sheets all combined to create the rocks which provide the physical foundation of the natural and cultural landscapes of the area. Follow the self-guided "Copper Coast" trail and walking cards available from the The Copper Coast Geopark Centre in Bunmahon.

Please respect our Geology and Nature; leave them with us, take just memories away.

Contact Information

Copper Coast Geopark Ltd.
Co. Waterford,
X42 T923

Phone: +353(0)51292828


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