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
Caption from PennLive.com blog: Visitors and staff gather on the South Lookout at Hawk Mountain Sanctuary, near Kempton, Berks County. (HAWK MOUNTAIN SANCTUARY PHOTO) (Photo substituted here for previous photo noted below, which has gone missing in DatedLinksLand)
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.
Posted by Ed Darrell 
Millard Fillmore's Bathtub 