he state's largest theme park said it will end its summer season four weeks early this year as its corporate parent continues to suffer financial problems. Six Flags Darien Lake, located halfway between Rochester and Buffalo, is one of six properties being considered for sale by parent company Six Flags Inc. because of financial losses. As of July 31, the park had already reduced operating hours five out of seven days and closed two rides, including a major roller coaster. The new closing date is Oct. 1.