English: Llyn Cwm Dulyn. Looking east towards Craig Cwm Dulyn [the crag on the right]. There is heather burning on the left. The lake is now a reservoir, but is very ancient - it is one of the lakes in Snowdonia which is home to the Arctic Char, which means it originates from the last Ice Age.
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== {{int:filedesc}} == {{Information |description={{en|1=Llyn Cwm Dulyn. Looking east towards Craig Cwm Dulyn [the crag on the right]. There is heather burning on the left. The lake is now a reservoir, but is very ancient - it is one of the lakes in Snowd