A bus plunged into a ravine in rural central Quebec yesterday, killing more than 40 people, Quebec police said. The bus, carrying elderly passengers on an outing for Canada's Thanksgiving holiday to see the turning of the seasons. Police said the accident occurred about 60 miles northeast of Quebec City. It happened at the bottom of a steep hill heading into a hard right curve. "There are more than 40 victims at the moment," the provincial police spokesman Real Ouellet said at the scene. Five survivors among the 48 people aboard the bus were taken to a hospital in nearby Baie-St-Paul.