Appalachian Trail Conservancy, Atlanta

The Appalachian Trail stretches from Georgia to Maine, running 2,180 miles over mountains, rocky slopes, and deep valleys. Since it was established in 1925, the Appalachian Trail Conservancy (ATC) has cared for the trail, maintaining 250,000 acres of public land. The organization educates hikers on Leave No Trace camping and why it's not a good idea to challenge a bear to a hugging contest.

Volunteers and trail crews build and repair shelters along the footpath and engage youth and community members in outdoor activities. In addition to these human-oriented services, the ATC works to protect endangered species living along the trail and to preserve the land's watershed streams and migratory corridor.