Twyn y Llyn

The walk up Twyn y Llyn isn't a grand alpine scramble - it's more of a steady plod through moorland that rewards you with proper views across Mid Wales. Starting from near Brecon, you're climbing just under 500 metres of open hill, which means exposure to the wind and weather, but also sight lines that stretch for miles on a clear day.

What you get here is the kind of walk that feels properly Welsh: purple heather, sheep-dotted slopes, and silence that almost hurts after the car drive. The summit itself is modest - no dramatic peak, just a cairn and the satisfaction of having earned a decent vantage point over the Brecon Beacons. On good weather days, you'll spot Black Mountain and the wider Carmarthenshire ridges. On grey days, you'll be above the clouds looking down at it all.

This suits experienced walkers more than casual strollers. Kids will manage it if they're used to hills, but there's no facilities halfway up, no café, no shortcuts. Allow two to three hours depending on pace and how long you linger at the top. It's free, obviously - it's a Welsh mountain.

If you're basing yourself at Pencelli Castle Caravan & Camping Park, just five miles south, Twyn y Llyn makes for a proper morning's work before lunch. The park itself is well-positioned for Brecon Beacons walking, and this peak sits nicely in a wider itinerary of the area's less crowded summits.