A clochan is a dry-stone beehive hut, the kind associated with monastic settlements along the Atlantic seaboard, typically built without mortar by corbelling flat stones inward until they met at a single point. This one has not survived intact. What remains is a collapsed rubble cairn, measuring just under ten metres in length and a little over four and a half metres wide, with only a single external corner still standing at the south-west.

The structure sits in Ceathrú an Lisín, a townland in County Galway, and its proximity to the nearby oratory suggests it was once part of a small monastic or religious enclosure. Such groupings, a church or oratory alongside one or more clochans, are a recognisable feature of early medieval ecclesiastical life in the west of Ireland, where communities of monks or hermits would gather in clusters of simple cells. The site was noted as far back as 1886, and later referenced by Tim Robinson, the writer and cartographer whose meticulous mapping of Connacht landscapes brought many such overlooked features to wider attention.