This is a strenuous 10 mile walk exploring remote moorland and mountain ridges in the quieter western part of the Brecon Beacons National Park.  Manageable for the average walker, but not for the unfit.

After a walk across remote moorland, passing a mountain lake (Llyn Yr Fan Fawr), the walk climbs to Fan Brycheiniog, a 802 metre summit with extensive views.

After continuing along the switch-back path at the top of the steep slope to view Llyn y Fan Fach, the return is along an escarpment with views of the upper Swansea valley descending to the A4067 car park.

Bring a packed lunch and plenty of fluids.  Mountain gear and good walking footwear essential.