Pen Tywn Glas

The walk up Pen Tywn Glas is straightforward enough, and the views back towards Crickhowell and the Black Mountains make it worth the climb. This isn't a dramatic summit - it's a rounded hill rather than a pointed peak - but that's rather the point. You get proper 360-degree visibility without needing to scramble or rope yourself to anything, which families with younger legs will appreciate.

The approach is moorland and grassland, occasionally boggy depending on the season, with the kind of vistas that make you understand why people hike in Wales rather than sitting at home. On a clear day you can see across the Brecon Beacons. The whole thing takes a couple of hours from Crickhowell if you're meandering, less if you're pushing it.

This is walker territory primarily - you're not going to spend more than a couple of hours here before heading back down, so treat it as part of a broader day in the Black Mountains rather than a destination in itself. It pairs well with exploring Crickhowell's proper high street, or combining it with other peaks in the area if you're keen.

Stay at Cwmdu Campsite just 2.5 miles away and you've got everything sorted. Olchon Valley Campsite, five miles out, is also excellent if you want to base yourself further into the valley. Both put you within reach of several good walks, and Crickhowell's close enough for decent food and a pint afterward.