This is a radial stone cairn in Cartron South near Ballinakill Church. It’s situated on a steep hill and the view from it is very impressive. There’s an ash tree growing up in the centre of it. This is the only recorded radial cairn in County Galway, the majority of them are in Cork and Kerry.
Note that this monument is on private land and permission must be received from the land owner to visit it.
Cartron South radial cairn. - Galway Community Archaeology
Grouped Standing Stones, Radial-Stone Cairns and Enclosures in the South of Ireland - Seán Ó Nualláin
CARTRON SOUTH STONE CIRCLE - megalithicmonumentsofireland.com
Stone Monuments in the Ballinakill District - Michael MacMahon
Radial Stone Cairns - mega-what.com