The conjectured site of an early medieval keeill or chapel. A natural hill of sand and gravel at this location rises some 15 metres above sea-level. It is known as Cronk Keeill Traie (Hill of the Keeill by the Strand). The site has long been ploughed over and no information regarding the keeill could be found. A stone, thought to have been taken from its burial ground has been kept at Cronkbrec house nearby. The dedication of the keeill is lost but the name Ardonan signifies Onan's height, Onan being a corruption of Adaman, Abbot of Iona.


Traces of reddened soil, iron slag and charcoal (but no pottery) similar to that found at the medieval iron smelting site at Ballavarry, were found in 1983 at Cronk Keeill Traie.