The Moelwynion (a Welsh plural, sometimes anglicised to Moelwyns) are a group of mountains in central Snowdonia. They extend from the north-east of Porthmadog to Moel Siabod, the highest of the group. The name derives from the names of the two largest mountains in the group, Moelwyn Mawr (great white hill) and Moelwyn Bach (little white hill).
An enjoyable scramble up Siabod. Walked up from the hut to the quaries, up the scramble. Poor vis on top. Skirted down via PYB and through woods back to hut. 
