sentences:  Gilfach Goch
  
  Gilfach Goch is a community, electoral ward and small former coal mining village in the Borough of Rhondda Cynon Taf, south Wales, near the larger community of Tonyrefail.It is situated in the Cwm Ogwr Fach (Small Ogmore Valley) between the Cwm Ogwr Fawr (Large Ogmore Valley) to the west and the Cwm Rhondda (Rhondda Valley) to the east.