These enclosures, known in Irish as ráth when constructed from earthen banks and ditches, were the farmsteads of early medieval Ireland, typically dating from roughly the fifth to the twelfth centuries. A family would have lived, worked, and kept their livestock within or just beyond the enclosing bank, and the surrounding ditch served as much as a marker of social territory as a defensive barrier. Kerry alone contains hundreds of them, many still clearly visible as raised rings on aerial photographs or as subtle humps in a field that a passing eye might easily dismiss as a trick of the ground.

The townland name Glanlarehan hints at the layered Gaelic geography that underlies so much of this part of Munster, where Irish place names frequently preserve references to landscape features, families, or long-vanished land uses. The rath at Glanlarehan fits into this broader pattern of early settlement that once dotted the Kerry countryside with small, self-contained farming enclosures. Without more detailed recorded information currently available about this particular site, its precise dimensions, condition, and any finds or features associated with it remain matters for further investigation rather than confident summary.