Central Beacons were called to search for wo separate parties of 2 & 4 walkers from a larger group that became lost between the summit of Pen y Fan & Pont ar Daf.  The two parties were reported missing when they failed to return to Pont ar Daf with the rest of the group. Contact was made by mobile phone, both groups made their own way off the hill & walked to the road south of Neuadd Reservoir where they were driven back to the start of their walk at Pont ar Daf & re-united with the rest of their group.