Llyn Idwal is a small lake lying within Cwm Idwal in the Glyderau mountains of Snowdonia. It was proposed to the SPNR as a potential nature reserve for its rare plantlife. The site is now owned by the National Trust and managed by the Countryside Council for Wales with some assistance from Snowdonia National Park.
(Above) the original SPNR survey documents for Llyn Idwal
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