sentences:  It might have been the site of the old churchyard of Segdoune, the name of Kilwinning prior to the establishment of the abbey.The summits of the three low hills within the reserve are each surrounded by a circular ditch and dike, called 'Roundels' or 'hursts' (an embanked wood, formerly coppiced); the actual purpose of the ditch and dike is unknown, but the exclusion of cattle is the most likely explanation.Ness and others record that the 'Seggan' grew at Corsehillmuir, known also as the 'Messenger of the Gods', better known to us as the Yellow flag Iris.