Lime Kilns are located all around the coast of Wales, but especially in the southwest of the country. Their original function was for burning limestone, which was imported by ship, the lime produced from this process was then spread on fields to enhance their productivity and counteract the naturally acidic soils of the area.

Lleolir Odynau Calch o amgylch arfordir Cymru, ond yn enwedig yn ne-orllewin y wlad. Eu swyddogaeth wreiddiol oedd llosgi calchfaen, a fewnforiwyd gan long, ac yna roedd y calch a gynhyrchwyd o'r broses hon yn cael ei wasgaru ar gaeau i wella eu cynhyrchiant a gwrthweithio priddoedd asidig naturiol yr ardal.