An injured 44-year-old man was transported from Whiting Ranch on Monday evening with a possible collarbone fracture, authorities said.
Orange County Fire Authority units were dispatched at 7:35 p.m. to rescue the man, who had been mountain biking.
While paramedics said the man may have broken his collarbone, he was otherwise "doing OK" and did not need an helicopter airlift, said OCFA Capt. Marc Stone.
OCFA units transported him out via park trails, Stone said.
It's the second time this month that firefighters have been called to the park to rescue an injured rider.
Four days ago, a out of the same part of Whiting Ranch.
Units used a helicopter to hoist the boy, who had also been mountain biking, out of the park.