One-paragraph in a story in the Philadelphia Daily Inquirer with a lot of impact:
A record number of bald eagles soared past Hawk Mountain in Berks County this fall, continuing a comeback that began with the banning of DDT in 1972. Then, 18 eagles were counted during the typical migration. The count this fall: 230. – Don Sapatkin
South Lookout at Hawk Mountain: The view from a rocky ledge near the entrance at Hawk Mountain provides a spectacular view of the countryside and is a good vantage point for watching migrating raptors in the fall. This photo was taken the afternoon of 10-16-2006. Public domain photo, via Answers.com.
The white area at upper center is the “River of Rocks”. According to http://www.hawkmountain.org, this formation is a mile-long boulder field, up to 40 feet deep, which was deposited 10,000-12,000 years ago (the end of the last Ice Age), when glaciers stopped 40-50 miles to the north of this location. Repeated freezing and thawing cracked boulders from the ridgetop that gradually slid to their current position.