Waun Lefrith
 Waun Lefrith is a top of Picws Du and is also the westernmost of the Carmarthen Fans or Bannau Sir Gaer a group of peaks within the Black Mountain of the Brecon Beacons National Park. It lies within the county of Carmarthenshire. The summit plateau of the mountain reaches a height of 677m above sea level. Picws Du is the other higher summit of the Bannau Sir Gaer / Carmarthen Fans.