 The road makes a hairpin turn to the west and crosses into Lower Frankford Township as it reaches the summit of the mountain.At the summit of Blue Mountain, PA 74 enters Spring Township in Perry County and passes through Waggoners Gap, making a sharp turn to the northeast to descend the mountain.The road makes a hairpin turn to the west and then a sharp turn to the north to reach the base of the mountain and head into a mix of farmland and woodland.