Part two of the SW100. From Pentre, climb to Mynydd Maerdy, cross Mynydd Bwllfa to cross the Heads of the Valleys Road at Hirwaun. Into Waterfall Country via Penderyn to reach Ystradfellte. Then to Blaen Llia to follow the Beacons Way over Fan Llia, Fan Dringarth and onto Craig Cerrig-gleisiad before reaching Storey Arms
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