Mid and West Wales Fire and Rescue Service say the large agricultural building, which measured 40 by 80 metres in size was being used as a wood store was on fire.
Firefighters from five fire stations across the city, along with a water bowser from Tumble in Carmarthenshire were called to the incident just after 4pm.

(Image: Peter Greenslade)
A spokesperson from the fire service said: “At 4.09pm on Wednesday, March 8th, crews from Reynoldston, Gorseinon, Morriston, Swansea West, Swansea Central and Tumble were called to an incident at Llanmadog.
“On arrival, 1 large agricultural building measuring 40x80m and used as a wood store was on fire. Crews extinguished the fire using 2 hose reel jets, 2 main jets, fire extinguishers, RTC spreaders and small tools. Once extinguished, some areas were left to smoulder overnight with a reinspection due to take place on Thursday, March 9th. The Police were also in attendance.
“Crews left the scene at 12.18am on Thursday, March 9th.”
(Lead image: Peter Greenslade)
