Fire crews were called to deal with a caravan blaze they believe was deliberately lit on Friday.
Barnsley and Cudworth crews attended the fire at 12.45am on Low Row, Woolley, Barnsley.
A touring caravan in a back garden was well alight when firefighters arrived.
They used hose reels to extinguish the blaze, and left the scene at 1.45am.
A South Yorkshire Fire and Rescue spokesman said firefighters believed the blaze was deliberately lit.