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Helvellyn, Lake District - Coggle Diagram
Helvellyn, Lake District
Geology
Borrowdale volcanic group, Windermere group and Skiddaw group (the oldest rocks)
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Igneous rock is most resistant so formed the highest ground so main valley glaciers flowed outwards from here
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Mountains made of hard, resistant rock such as granite, which have been able to withstand erosion for millions of years
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Location
NW England, in adminstrative county of Cumbria
covers historic counties like Cumberland, Lancashire, West Marland
Helvellyn Range rune N to S, has a peak altitude of 950m, part of a ridge of high ground extending for 11km