Several gorse fires broke out in north Inishowen on Sunday afternoon.
The incidents happened in an area east of the main Buncrana to Carndonagh road, about 6 km from Carndonagh.
Fire brigade personnel were alerted shortly after 2.00 pm and rushed to the scene.
At one point, there was concern that the fires, if not brought under control, could spread towards a number of homes.
Plumes of smoke could be seen for miles.
A strong wind made it more difficult to tackle the outbreaks.
Three fire tenders and a support vehicle were still in the area after 6.00 pm to monitor the situation.
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