SWALL MEADOWS (CBS SF) – A wind-driven fire that destroyed 40 residents and damaged five others near the Nevada border is now 85 percent contained.

20 engines and 250 firefighters continue to battle the Round fire, which broke out Friday on the border of Inyo and Mono counties.

California Department of Forestry and Fire Protection Capt. Liz Brown says dozens of power poles have come down in the communities of Swall Meadows and Paradise, creating hazards for the roughly 250 residents who have been evacuated. Crews were assessing trees in the two communitiesto ensure they wouldn’t come down.

The cause of the fire remains under investigation.