For a walk which visits quiet hills and explores post-industrial dereliction, Eryri ’s Moelwyns are second to none.

■ Distance: 8½ miles/13.7km ■ Time: 5 hours ■ Grade: Challenging

When the weather gods deem the mountains of North Wales inclement, there’s a group of hills nearby that nearly always defy the order from on-high. The Llyn Peninsula’s Yr Eifl, is a case of three for one, and all in half a day.

NEWCASTLE AND MARDU CIRCULAR Level Easy Elevation gain 217m Length 6.1km (1hr 49min) Description This round-the-hill loop trail from Newcastle leads through peaceful rural landscapes and small village

14.5km / 9 miles / 5-5.5 hours Ascent 777m/2550ft

Jim Perrin revisits a minor but notable hill of the Rhinogydd, in the fine company of campaigning photographer Fay Godwin and archaeologist Peter Crew