Kerry Walker takes a road trip through Bannau Brycheiniog National Park

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.

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

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

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

Tracing its way along the Welsh coast, there’s more to the A487 than meets the eye