Symbols of the Appalachian Trail

Understanding the Iconography of the A.T.

March 20, 2025

The Appalachian Trail (A.T.) is more than just a path through the mountains—it’s a historic and cultural treasure marked by symbols that represent its legacy. Over the years, different icons have been used to guide hikers, designate official boundaries, and represent the Appalachian Trail Conservancy, which manages the Trail. However, many people are unfamiliar with the distinctions between these symbols.

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The Maine to Georgia Diamond

One of the earliest and most enduring symbols of the A.T. is the diamond-shaped marker with the words “Maine to Georgia.” Adopted in 1922, this symbol has been trademarked since the mid-1970s. The diamond was initially used to mark the Trail’s route, helping hikers navigate long before the now-familiar white blaze became common.

Wear a piece of A.T. history with the original Trail marker trucker hat.

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The White Blaze

In the early 1930s, the iconic 2×6-inch white blaze replaced the diamond marker as the primary way of marking the Trail. This change was a practical one—after the death of Judge Perkins, who had funded the diamond markers, there was no one to underwrite their cost. The white blaze was an inexpensive and effective solution, and today, it is perhaps the most recognizable marker of the A.T. A single blaze reassures hikers they are on the right path, while a double blaze signals an upcoming turn or change in direction.

Photo by Christine Wilson

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The Appalachian Trail Conservancy Logo

The Appalachian Trail Conservancy (ATC), the nonprofit responsible for overseeing the Trail’s protection and management, has had its own evolving logo over the years. The most recent version of the ATC’s logo was unveiled in 2025 to mark the ATC’s 100th year in service to the Trail. While this logo represents the ATC’s role in stewardship, it is distinct from other Trail markers and symbols.

Learn more about the ATC’s new logo.

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The Pregnant Triangle

Another symbol associated with the A.T. is the so-called “pregnant triangle.” This triangular icon, often used to indicate the Trail on signage, is trademarked by the National Park Service (NPS). This shape is used by all National Scenic Trails.  

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Trail Boundary Markers and Roadway Signs

The A.T. received official status as a National Scenic Trail in 1968, and by 1978, federal boundary markers were installed along its length. These markers, found on trees and in the ground, indicate the Trail’s official corridor and protect its integrity. Additionally, in the 1970s and 1980s, the NPS and some states funded the installation of highway signs at road crossings, further increasing visibility and wayfinding for the Trail. 

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Local and Community Signs

Various local organizations have contributed their own signage to the Trail over the years. For example, the Georgia Appalachian Trail Club (GATC) holds a trademark on plaques marking the Trail’s southern terminus at Springer Mountain. Some A.T. towns have also erected signs to acknowledge their connection to the Trail, predating the official A.T. Community™ signs introduced in the 2000s. 

While the Appalachian Trail is often symbolized by the simple white blaze, a variety of icons have played a role in its history. From the Maine to Georgia diamond to modern community signs, each symbol tells a part of the Trail’s story. Understanding these markers not only deepens appreciation for the A.T. but also ensures that its legacy and management are recognized and respected by hikers and supporters alike. 

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