Around 500 bales of hay went up in flames in a field off Spitalgap Lane in Darrington yesterday evening.
Crews from Pontefract and Castleford were called to the scene just before 7.30pm.
They remained at the fire throughout the night.
And a new team of firefighters were sent out to finish tackling the blaze this morning.
A spokesman for Pontefract station said: "They tend to be dramatic do hay bale fires, but there were no risks around."
The cause of the fire is still being investigated.