Nant Gwynant is one of the prettiest valleys in Snowdonia; a walk here is certainly a special treat. The central feature of the valley is the beautiful Llyn Gwynant. A circuit of the lake, crossing through the Nant Gwynant campsite and following a wooded path above the northern shore of the lake, is superb. If you fancy a paddle on the lake boats can be hired from the campsite.
The walk can be extended by venturing further up the valley on the narrow lane (not the main road which runs above) and looping round and following Afon Glaslyn back to the lake. The riverside path is particularly charming as it passes underneath the cliffs and boulder fields of Clogwyn y Bustach and Clogwyn y Wenallt.
Another good route starts from Pont Bethania and follows a path onto the narrow lane running into the top of the secluded Nanmor valley, before kinking back northwards to Nant Gwynant.
There is some parking space by the side of the Llyn Gwynant. There is also a car park at Pont Bethania, and you can park in the campsite, although there is a charge for this too.
Mostly minor roads or good footpaths, but some rough terrain and muddy sections, particularly during rainy periods.