A major expansion program designed to provide the finest and easiest skiing in Pennsylvania has been announced by Big Boulder Ski Area near Split Rock Lodge on Lake Harmony. The Big Boulder improvement program will be developed in a series of progressive steps, including two new ski slopes, two new ski lifts, snow-making facilities will be tripled in size, the parking area will be enlarged so 1,000 cars can be accommodated, and the lodge will be enlarged and refurbished.