Two such monuments in such close proximity raises questions that have no easy answers. Were they used simultaneously, or does one predate the other? Were they serving the same community, or marking some territorial or ritual distinction that made sense to people four or five thousand years ago and is now entirely opaque to us?

Wedge tombs, the most numerous of Ireland's megalithic tomb types, are generally dated to the late Neolithic and early Bronze Age, broadly between 2500 and 2000 BC. They take their name from their characteristic shape, wider and taller at the front and tapering toward the back, and most are oriented toward the west or south-west, a pattern that may relate to the setting sun. The Arduslough example follows this convention, with its chamber open to the south-west. It is a small structure, just 2.45 metres in length, with a width of 1.3 metres at the western end narrowing to 1.1 metres at the east. Two stones form each of the long sides, the eastern end is sealed by an inset backstone, and the whole is covered by a single roofstone. One outer-wall stone survives to the south of the chamber, and traces of the original mound that would have enclosed the western end are still faintly visible. The tomb sits on a steep slope facing south-east, and was recorded and catalogued by Ruaidhrí de Valera and Seán Ó Nualláin in their landmark survey of Irish megalithic tombs, published in 1982.