It is under investigation, possibly an out of control campfire but that has not been confirmed. Over 1200 fire fighters tirelessly worked day and night fighting this fire, which began June 19th, has claimed over 1500 acres and while it is now 100% contained, it is still being monitored for hot spots.

The fire was named the Holcomb Fire due to it's presence in the Holcomb Valley, which is in the Big Bear Valley, in The San Bernardino Mountains (California). The fire was visible from Hwy 18 in the Cactus Flats area, as well as as the communities dump transfer station and Ecological Reserve.

The photo was taken in Big Bear City and the mountain you are looking at is Gold Mountain. At one point during the fire, evacuations were ordered for 1st, 2nd and 3rd st in Baldwin and I was on 7th St. helping friends pack their home and load the vehicle (so to be ready to evacuate in a moments notice.

While we could see flames from the back yard, thankfully, the fire never jumped the road, the evacuation was lifted and not a single home was damaged. The Big Bear/Holcomb Valley Fire Fighters are a truly amazing team of courageous men and women.

I value your question and opted to also edit the photo to include the additional information. Thank you.