Fire crews have remained at moorland sites across West Yorkshire following outbreaks of fires over the Easter weekend.
West Yorkshire Fire and Rescue Service said eight crews remained on Marsden Moor following a blaze that started on Sunday 21 April.
The National Trust said it was thought to have been started by a barbecue.
Crews were also called to Ilkley Moor on Saturday where a fire spread over 25,000 sq metres. A man has been charged with arson in connection with the fire.
Two other men have been released pending further investigation.