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holne ridge holne ridge, on dartmoor, includes some of southern dartmoor's highest land.the ridge to the south west overlooks mires and bogs like aune head mires.to the north east it overlooks the dart gorge with its many tors; sharp tor, for example.it also includes many notable features includingabandoned mines and the water environmentabandoned metal mines are not only a source of pollution, they are a part of our national heritage and an important reserve of biodiversity. many sites are designated as sites of special scientific interest or scheduled ancient monuments. the tin and copper mining areas of cornwall and west devon have been declared a un
10 best things to do in llandudno what is llandudnollandudnos great orme mines are regarded as the largest prehistoric copper mines in the world. these narrow tunnels date back to the bronze age and features a 5metredeep victorian mine shaft. if youre not claustrophobic, we highly recommend exploring these passageways, many of which seem to be built by young children.