Palaeogene intrusive rocks are present in the form of igneous dykes that were created 65 million years ago when magma welled up through cracks in the overlying rocks. The oldest rocks date back 895 million years to the Precambrian period and consist mainly of metamorphosed sedimentary rocks. These rock sequences are best seen in the upland regions of the UNESCO Global Geopark where the rock layers are exposed in dramatic cliffs, escarpments and caves. The geology of the Cuilcagh Lakelands UNESCO Global Geopark is dominated by a classic succession of marine and deltaic sedimentary rocks including limestones, mudstones, shales and sandstones from both Lower and Upper Carboniferous times between 340 and 320 million years ago. The caves are widely regarded as a world-class natural attraction containing marvellous stream passages formed by three rivers that sink underground on the slopes of Cuilcagh Mountain. The uplands contain extensive areas of forest, blanket bog and karst where the underlying limestone has been carved out by the abundant rainfall to form significant caves systems including the world famous Cuilcagh Lakelands. The uplands are intersected by broad u-shaped valleys that sweep down to the surrounding lowlands where numerous lakes have formed in glacial hollows and swarms of drumlins form many egg-shaped, rounded hills. The region displays a classic, glaciated landscape comprising of extensive uplands that have been smoothed down by successive ice sheets. It lies in the north-west corner of the island of Ireland, much of it is in County Fermanagh in Northern Ireland, which is part of the United Kingdom and a sizeable remainder is in County Cavan in the Republic of Ireland. The Cuilcagh Lakelands UNESCO Global Geopark is the World’s first UNESCO Global Geopark crossing an international border. “A natural underworld of rivers, waterfalls, and winding passages” UNESCO Atlas of the World's Languages in Danger.MGIEP - Mahatma Gandhi Institute of Education for Peace and Sustainable Development.IESALC - International Institute for Higher Education in Latin America and the Caribbean.IITE - Institute for Information Technologies in Education.IICBA - International Institute for Capacity-Building in Africa.IBE - International Bureau of Education.ICTP - International Centre for Theoretical Physics.IIEP - International Institute for Educational Planning.UNEVOC - International Centre for Technical and Vocational Education and Training.Education for Sustainable Development Network.International Coalition of Inclusive and Sustainable Cities – ICCAR. ![]() Intergovernmental Oceanographic Commission.Advancing the 2030 Sustainable Development Agenda.
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