The outcrop's decorated face measures 3.4 metres by 1.1 metres, and across it runs a network of grooves that divide the surface into largely rectilinear compartments. Two of those compartments enclose single cupmarks, shallow bowl-shaped depressions carved into the stone, while a third contains a cup-and-ring, a cupmark surrounded by one or more incised concentric circles. A second cup-and-ring appears near the eastern end of the surface, interrupting a groove that meanders rather than follows the geometric logic of the rest. The decorated face slopes upward to the north.

This kind of prehistoric rock art, found widely across Atlantic Europe and dating broadly to the Neolithic and Bronze Age periods, is particularly well represented on the Iveragh Peninsula. The Kealduff example was catalogued by archaeologists Annalisa O'Sullivan and John Sheehan in their 1996 survey of the peninsula's archaeology, published by Cork University Press, which remains the foundational reference for the area. What makes the Kealduff carving quietly interesting is the combination of the formal, rectilinear groove-work alongside the more typical cup-and-ring motifs; the two registers sit together on the same surface without obvious reconciliation, and no consensus explanation for either type of marking, let alone their combination, has emerged from decades of research.

The site sits on a NE-facing slope in open mountain heath with broad views across the Behy valley and towards the surrounding hills. It is worth noting, however, that as of the most recent available records the rock has not been definitively relocated by surveyors, meaning its precise position on the ground remains unconfirmed. Anyone interested in the wider rock art tradition of south Kerry would find O'Sullivan and Sheehan's 1996 survey a practical starting point for understanding what else survives in this landscape.