A lime kiln was a simple but labour-intensive structure, typically a stone-lined bowl or draw kiln built into a hillside, used to burn limestone at high temperatures. The resulting quicklime was spread on fields to reduce soil acidity, a practice that shaped farming across Ireland for centuries before chemical fertilisers made it largely redundant.

Lime burning was widespread in Ireland from at least the seventeenth century onwards, reaching its peak during the agricultural improvements of the eighteenth and nineteenth centuries. Landlords and tenant farmers alike depended on local kilns, and their presence in a townland like Carrigagulla, set in the hilly country of mid-Cork between Macroom and Millstreet, reflects how thoroughly this technology was embedded in everyday rural life. The kilns were generally built close to a limestone source and a fuel supply, often timber or turf, and their locations tell a quiet story about the economics and practicalities of working the land in a particular place.