An emergency warning has gone out for the Gospers Mountain Fire, with increased fire activity in the area of Colo Heights.
While residents of Colo Heights and Upper Colo have been told to evacuate, Glen Alice and Wolgan residents have been told to monitor conditions.
Wisemans Ferry Road is closed from the Ferry, east to Mill Creek, no roads in the Lithgow LGA have been closed.
The fire is burning over a large area in the Wollemi, Yengo and Dharug National Parks and Parr State Recreation areas.
The fire is currently more than 230,000 hectares in size and is being controlled.
The fire is burning to the West of Boree and travelling in an easterly direction. The fire is likely to join with the Little L fire which is burning to the north west.
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