The twelve SACs are as follows: Eryri / Snowdonia SAC which covers much of the Carneddau, Glyderau and the Snowdon massif, Afon Gwyrfai a Llyn Cwellyn, Corsydd Eifionydd / Eifionydd Fens (north of Garndolbenmaen), the Coedydd Derw a Safleoedd Ystlumod Meirion / Meirionydd Oakwoods and Bat Sites - a series of sites between Tremadog, Trawsfynydd and Ffestiniog and Beddgelert and extending up the Gwynant. It also includes many of the oakwoods of the Mawddach and its tributaries. Afon Eden - Cors Goch Trawsfynydd, Rhinog, Cadair Idris (in 2 parts), Migneint-Arenig-Dduallt, River Dee and Bala Lake / Afon Dyfrdwy a Llyn Tegid (Wales),