 It was built so far into the rising land of the hillside that the base of the west window was just above the ground.The building was added to and altered several times over the next few centuries in a manner that Ian Nairn described as a ""century-by-century accretion of piety"".Most of the nave, its south doorway and the chancel arch are Saxon but the chancel was rebuilt in the early 13th century and a priest's doorway was added.