Left Mercer at 10:00. Western Pennsylvania is beautiful, scenic jungle—lush, hilly and heavily forested. We crossed two beautiful rivers—the Allegheny and the Clarion…both in beautiful, deep valleys. We’re staying at a KOA in central Pennsylvania so we can get together with a friend of Mike’s. Arrived here at 3:00 and were set up by 3:30. Cooler today—upper 70s, but cloudy and humid. Started sprinkling as we were setting up. We took Interstate 80 coming across. Roads good except for one 10-mile stretch. Heard a lot of banging around late in the evening. Human or bear?