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

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.

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

Ascent 903m/2960ft 12.3km / 7.6 miles / 4 hours

Kerry Walker takes a road trip through Bannau Brycheiniog National Park

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