Fire crews have been battling a major mountainside gorse fire overnight at Killery and Crossboy, near Ballintogher and Dromahair on the Sligo/Leitrim border..
Fire units from Sligo and Leitrim were dispatched to the scene.
No injuries have been reported.
Fire crews managed to protect two houses.
However, there was concern that the blaze might engulf nearby forestry.
The Coast Guard helicopter was mobilised to monitor the situation and the Army was also deployed.
The R287 road was closed to traffic between the Holy Well and Ballintogher to allow free access to emergency vehicles.
Motorists were urged to stay away from the Slish Wood area.