Since Sunday, April 26, Mid and West Wales Fire and Rescue Service crews have responded to several wildfires in and around the Elan Valley area.
Firefighter crews are continuing to respond to fires near the Claerwen Dam.
A fire service spokesman said: “The area should be avoided while this incident is ongoing to allow access for emergency services.
“Local residents are advised to keep windows and doors closed if there is thick smoke in the area.”
