A pile of driftwood caught fire Sunday morning at Folsom Lake, the South Placer Fire District said.

Firefighters responded to the lake in Granite Bay during the early-morning hours and were able to extinguish the flames.

The cause of the fire is unknown.

Large piles of driftwood and debris have collected along the lake’s shore, the Folsom Lake State Park officials said.

“Pretty much is a ring completely around the lake,” park superintendent Richard Preston said Thursday. “Came down from the reservoirs up above and some of the debris that’s been in the river systems for a number of years through the droughts, and it pretty much all just flushed down this year with large storms in January and February.”

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