Mason Mill Park

We are committed to the safety and health of our citizens. As the fight against COVID-19 continues, all Naturalist-led programs are suspended but county parks remain open for outdoor use. If you visit a park or any other public location, follow CDC guidance on how to protect yourself, including recommendations for social distancing.


Mason Mill Park contains a 120-acre forest with a network of some of the nicest hiking and biking trails in the county. The South Peachtree Creek Trail is a multi-use boardwalk and paved route that connects Mason Mill Park, Medlock Park, the Leafmore neighborhood, and Emory University. A network of soft surface trails also provides miles of hiking opportunities within Mason Mill, Ira B. Melton, and Medlock Parks. The forest is also the location of the old Decatur Waterworks, which is on the National Historic Registry.

 Directions, hours, and park rules

Directions: 1340 McConnell Dr, Decatur, GA 30033-3539

Park Hours: Dawn to dusk

Park rules

Meet the Ranger

Ranger JonahDeKalb County Park Naturalist, Jonah McDonald, is stationed at Mason Mill Park and leads nature programs that are open to the public, coordinates volunteer activities, and serves as point person for safety and maintenance at the park. Before working for the county, Jonah ran outdoors programs for independent schools, led history tours, and wrote a hiking guidebook about Atlanta-area trails. Though Naturalist-led programs are suspended during the COVID-19 pandemic, you can follow Ranger Jonah on YouTube, Facebook, or Instagram!

Trail Information

We are in the process of developing an official trail map. Follow this link to view an interactive map of the South Peachtree Creek Trail: PATH map


Mason Mill Park: At the corner of McConnell Drive and Mason Mill Rd, near the DeKalb Tennis Center

Medlock Park: Western end of the Scott Circle parking lot near the baseball fields

Ira B. Melton Park: 2080 Desmond Drive, directly across from Park Lane

Leafmore neighborhood: PATH trailhead at N. Druid Hills Road and Spring Creek Road

Mason Mill dog park directions: N. Jamestown Rd & Blackshear Dr.

Junior Ranger Activity JournalDeKalb County Junior Ranger Program

Junior Ranger Program website

Download the Junior Ranger Activity Journal

Questions about the Junior Ranger Program? Email


iNaturalist logoSee something on the trails? If Ranger Jonah’s not around, use the free iNaturalist app to help figure out what you saw.

View all iNaturalist observations at Mason Mill Park

Stay Connected

Facebook_logoFollow on Facebook

Instagram_logo Follow on Instagram

YouTube_logo Subscribe on YouTube

Sign up for emails about Naturalist Programs

/ ( mm / dd )

Other things to do at Mason Mill Park

Mason Mill Recreation Center

Central DeKalb Senior Center

Toco Hill - Avis G. Williams Library

DeKalb Tennis Center and Agape Tennis Academy

Plus a dog park, playground, pavilions, multi-use fields, and a community garden.