The Caer yr Arfau Burial Chamber lies 300 yards north of Creigiau village. 
It dates from the Neolithic period about 3,000 B.C. It was probably built as a burial chamber for the local chief and his family and it is evidence of life when the area was controlled by farmers and huntsmen in the pre-celtic age.
The name of the cromlech has caused some debate amongst historians. The favoured interpretaion is that it refers to a battle field or killing field. When the bones were discovered in the cromlech probably the people thought that the body had been buried after a battle.
This is the oldest building by far in the area it belongs to the Neolithic age when the earliest farmers settled in this part of the country. These people were developing from being nomadic huntsmen to being settled farmers, undoubtedly the builders of the cromlech belonged to an organised society with the capability to produce food. Their farming capability was limited to working on light, well draining soils. These conditions are usually found on limestone soils and so the builders of Caeryrfa had built their homes and farmed the fields around Creigiau.
