The storied 800-year-old old-growth coastal redwood known as the Pioneer Tree has burned down in Marin County’s Samuel P. Taylor State Park, park officials said.

The tree was destroyed in a half-acre fire that was reported around 11:25 a.m. Thursday, March 24. It was one of the few remaining old-growth coastal redwoods in the park.

“State Parks is saddened to inform the public that the iconic Pioneer Tree at Samuel P. Taylor State Park is no longer standing. The tree was fully engulfed in flames earlier today,” park officials said on the California State Parks website Thursday.

“It’s incredibly heartbreaking to learn about the loss of the Pioneer Tree at Samuel P. Taylor State Park. We join park staff, volunteers, and all park lovers in the mourning of this inspirational old-growth redwood,” officials posted on social media Friday.

The Marin County Fire Department reported to the scene and extinguished the blaze, officials said.

No injuries were reported. The cause of the fire is unknown.