Llan Ddu Fawr or Waun Claerddu is a hill located in Ceredigion, Wales, at 594 metres (1,949 ft) above sea level.

It is located about 10 miles south of Pumlumon.

The surrounding land can be very boggy.

[1] The peak is located within the region known as the Desert of Wales.

This Ceredigion location article is a stub.