A wildfire believed to be human-caused on Santa Rosa Island in the Channel Islands National Park has grown to more than 10,000 acres and destroyed two historic structures, officials said Sunday.

The fire burning in remote and rugged terrain on the southeastern end of the island was reported by an aircraft and confirmed by the National Park Service on Friday, according to the agency. By 6 p.m. Sunday, Cal Fire said the blaze had scorched 10,025 acres.

The park service said the east side of the fire had reached East Point and East Point Road, while the west side — where fire activity had slowed — had reached near the South Point Lighthouse. The condition of the lighthouse is unknown. The fire was expected to continue moving north on Monday as weather patterns change, according to the U.S. Wildland Fire Service.

Two historic structures, Johnson’s Lee Equipment Shed and the Wreck Line Camp Cabin, as well as another storage structure, were destroyed by the flames, the NPS said. The agency added that firefighters and Channel Islands National Park staff are working together to ensure the park’s infrastructure and the island’s unique plant and animal habitat are protected.

The U.S. Coast Guard said it rescued a 67-year-old man while responding to the fire on Friday morning.

Eleven park service employees were evacuated from the island by a helicopter on Sunday after their housing was threatened by the fire, according to the Santa Barbara County Fire Department.

Helicopter Rescue- Helicopter 964 successfully evacuated 11 National Park Service employees from Santa Rosa Island today amid the ongoing vegetation fire.
The crew safely transported all personnel from employee housing—threatened with being cut off by the fire—to Oxnard Airport,… pic.twitter.com/FxQ0WSCdO1

— Santa Barbara County Fire Department (@SBCFireInfo) May 18, 2026

Seventy personnel were assigned to the fire, but more crews were expected to respond Monday, when wind and boating conditions improve, the NPS said.

The exact cause of the fire remains under investigation, but the park service said it was determined to be human-caused.