There is a Bronze Age burial cairn at the summit of Fan Foel, and it was excavated in 2002–4 with the results published in 2014 in Archaeologia Cambrensis. The round barrow was about 16 metres (about 52 feet) wide and was badly eroded with stones from the structure removed to build a central cairn by passing walkers. Excavation of the barrow showed that it contained two separate burials, the central one in a stone cist contained the burnt bones of an adult woman and two children carbon dated to about 2000 BC. The ground surface beneath the barrow was carbon dated to about 2300 BC. The cist also contained a broken pottery food vessel decorated in the style of the Beaker people as well as a chert knife. The second burial was somewhat later and contained a broken collared urn with a rare belt hook, indicating a wealthy person. The remains of meadowsweet flowers were found in the primary cist, and may represent a wreath left with the burnt bones. The large capstone which covers the cist has been left in place in the current state of the barrow (as of October 2015). The outer kerb stones are still exposed, and show how the barrow was built. There is great similarity to the early Bronze Age barrows on the summits of Pen y Fan and Corn Du, which are also exposed to show the internal cists and outer kerbstones.