A fulacht fia once stood here, one of thousands of prehistoric cooking sites scattered across the Irish landscape, identifiable in surviving examples by their characteristic horseshoe-shaped mounds of burnt and fire-cracked stone. This one was levelled in June 1984 by University College Cork, most likely in the course of an archaeological investigation, leaving the site as little more than a coordinate in a county inventory.

Fulachtaí fia, the plural form, are among the most common archaeological monuments in Ireland, dating broadly from the Bronze Age, though some sites show evidence of use across many centuries. The typical arrangement involved a trough sunk into the ground, often timber-lined or stone-lined, filled with water, which was then heated by dropping fire-cracked stones into it. The discarded stones accumulated over time into the mounds that make these sites recognisable today. At Hollyhill, that mound is gone. Whatever the 1984 investigation uncovered or confirmed, the physical trace of the monument did not survive it.