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).
Starting from Tanygrisau we walked round the back of Foel Ddu via Cwmorthin to Bwlch Stwlan. Then South to ascend Moelwyn Bach. Then North over Moelwyn Mawr and West and SW to Garreg. 15 km and 830m ascent. Party of five people. Tricky navigating off Moelwyn Mawr in the mist when the ridge stops being so sharp.
