A blaze ignited by driftwood broke out on a beach on Taiwan's northern coast in the early hours of Saturday, but firefighters extinguished it before it grew dangerous, local police said. A witness said he saw a group of teenagers barbecuing at the beach and suspected that they had failed to put out the fire before they left. The blaze burst out on the coast not far from Fulong Beach in Gongliao Township, the venue of the three-day 2009 Hohaiyen Rock Festival that opened Friday with 70,000 people in attendance. County police said many young people turned to other beaches near Fulong to continue the party after performances at the annual festival ended Friday night. The private beach parties lasted until around 3 a.m., the police said. 