More than 40 firefighters are battling a heath fire at a nature reserve near Wareham.
Crews from seven fire stations were called to Creech Heath at Stoborough just before 1pm.
Furzebrook Road has been closed from the roundabout on the A351 to the East Creech Farm Campsite and is not likely to be re-opened until 5pm.
Swanage Railway has also suspended its services as a result of the blaze.
A spokesperson for Dorset and Wiltshire Fire and Rescue Service said approximately five hectares of land are alight, but the crews have got the fire under control.
"Approximately 45 firefighters are there. The crews will be on scene for some time," they said.
"We are advising people to proceed with caution in the area due to a number of appliances still being in the area.
"Beaters and hose reel jets are being used to damp down the area, and a fire break is in use to stop the fire spreading," they added.
The 80 hectare nature reserve is home to a number of reptile species and several protected bird species.
Picture: Swanage Fire Station
In an update, firefighters are advising people to avoid the area if possible.
Good Evening, White Watch here for the first of our two night shifts. We are still dealing with the fire at #CreechHeath #Wareham so please avoid the area if at all possible, thank you
— DWFireControl (@DWFireControl) October 3, 2018
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here